The question is asking us if Takeshi wrote letters on Friday. From the picture, we can see that he listened to music on Friday. Thus, we answer in the negative. We begin by saying no, as this is a direct question. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We will conclude our response with a new sentence that details what Takeshi actually was doing. We arrive at this sentence:
いいえ、たけしさんは金曜日に手紙をかきませんでした。音楽を聞きました。
いいえ、たけしさんはきんようびにてがみをかきませんでした。おんがくをききました。

The question is asking us if Takeshi wrote letters on Friday. From the picture, we can see that he listened to music on Friday. Thus, we answer in the negative. We begin by saying no, as this is a direct question. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We will conclude our response with a new sentence that details what Takeshi actually was doing. We arrive at this sentence:
いいえ、たけしさんは金曜日に手紙をかきませんでした。音楽を聞きました。
いいえ、たけしさんはきんようびにてがみをかきませんでした。おんがくをききました。

Many new verbs can be created by adding ‘する’ after a noun and the particle ‘を.’ Sometimes these verbs omit ‘を,’ as in the case of ‘勉強する/べんきょうする,’ which derives from the noun for ‘study,’ ‘べんきょう.’ Though not always grammatically correct, this can be a very helpful construction to explain concepts for which you have not yet learned the words.
The question is asking us where Takeshi worked his part time job on Saturday. From the picture, we can see that Takeshi worked at his part time job on Saturday. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We arrive at this sentence:
たけしさんは土曜日にスーパーでアルバイトをしました。
たけしさんはどようびにスーパーでアルバイトをしました。

The question is asking us where Takeshi worked his part time job on Saturday. From the picture, we can see that Takeshi worked at his part time job on Saturday. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We arrive at this sentence:
たけしさんは土曜日にスーパーでアルバイトをしました。
たけしさんはどようびにスーパーでアルバイトをしました。

The question is asking us when Takeshi listened to music. From the picture, we can see that he listened to music on Friday. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We arrive at this sentence:
たけしさんは金曜日に音楽を聞きました。
たけしさんはきんようびにおんがくをききました。

The question is asking us when Takeshi listened to music. From the picture, we can see that he listened to music on Friday. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We arrive at this sentence:
たけしさんは金曜日に音楽を聞きました。
たけしさんはきんようびにおんがくをききました。

The question is asking us what Takeshi did on Sunday. From the picture and inferences from the blanks that we are to fill in, we can see that Takeshi saw a movie with Mary on Sunday. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We arrive at this sentence:
たけしさんは日曜日に映画館でメアリーさんと映画を見ました。
たけしさんはにちようびにえいがかんでメアリーさんとえいがをみました。

The question is asking us what Takeshi did on Sunday. From the picture and inferences from the blanks that we are to fill in, we can see that Takeshi saw a movie with Mary on Sunday. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We arrive at this sentence:
たけしさんは日曜日に映画館でメアリーさんと映画を見ました。
たけしさんはにちようびにえいがかんでメアリーさんとえいがをみました。

Commas and most other punctuation marks were introduced to Japanese through Western, English-language literature. Thus, the rules for Japanese punctuation are very similar to English. The Japanese comma has fewer rules governing its usage than does the English one; it can be used pretty much anywhere to add a break or emphasis and is often found after the subject marker ‘は’ or after time words that are unmarked with a particle.
The question is asking us what we did on the weekend. (Note that, as we learned in Chapter 3, general time words like ‘週末/しゅうまつ’ do not require the particle ‘に.’) We can answer whatever we like here. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We will also furnish the answer with as much detail as reasonably possible. We arrive at this sentence:
私は、週末、 図書館で友達と本を読みました。
わたしは、しゅうまつ、としょかんでともだちとほんをよみました。

The question is asking us what we did on the weekend. (Note that, as we learned in Chapter 3, general time words like ‘週末/しゅうまつ’ do not require the particle ‘に.’) We can answer whatever we like here. For the sake of practice, we will reiterate the information presented by the question, even though a more naturalistic and conversational answer could omit the subject and time word. We will also furnish the answer with as much detail as reasonably possible. We arrive at this sentence:
私は、週末、 図書館で友達と本を読みました。
わたしは、しゅうまつ、としょかんでともだちとほんをよみました。