To answer this question, we simply need to fill in the blanks in the listed order and attach any required particles. First, we add the time word after the subject. We next add the duration phrase, though duration words and phrases can also be placed after the particle ‘を.’ Neither ‘昨日（きのう）’ nor ‘二時間（にじかん）’ require particles, so they can join the sentence as is. Finally, we add the direct object and verb. We will need to use the particle ‘を’ to mark the direct object ‘テレビ,’ and we will conjugate the verb ‘みる’ into the past affirmative tense. We arrive at this sentence:
メアリーさんは昨日二時間テレビを見ました。
メアリーさんはきのうにじかんにテレビをみました。

To answer this question, we simply need to fill in the blanks in the listed order and attach any required particles. First, we add the time word after the subject. We next add the duration phrase, though duration words and phrases can also be placed after the particle ‘を.’ Neither ‘昨日（きのう）’ nor ‘二時間（にじかん）’ require particles, so they can join the sentence as is. Finally, we add the direct object and verb. We will need to use the particle ‘を’ to mark the direct object ‘テレビ,’ and we will conjugate the verb ‘みる’ into the past affirmative tense. We arrive at this sentence:
メアリーさんは昨日二時間テレビを見ました。
メアリーさんはきのうにじかんにテレビをみました。

To answer this question, we simply need to fill in the blanks in the listed order and attach any required particles. First, we add the location information after the subject. We next add the duration phrase, though duration words and phrases can also be placed after the particle ‘を.’ ‘一時間（いちじかん）’ does not require a particle, so it can join the sentence as is. Finally, we add the direct object and verb. In this case, ‘メアリーさん’ is the direct object, so we will need to mark her with the particle ‘を.’ We will conjugate the verb ‘待つ（まつ）’ into the past affirmative tense. We arrive at this sentence:
たけしさんはデパートの前に一時間メアリーさんを待ちました。
たけしさんはデパートのまえに一時かんメアリーさんをまちました。

To answer this question, we simply need to fill in the blanks in the listed order and attach any required particles. First, we add the location information after the subject. We next add the duration phrase, though duration words and phrases can also be placed after the particle ‘を.’ ‘一時間（いちじかん）’ does not require a particle, so it can join the sentence as is. Finally, we add the direct object and verb. In this case, ‘メアリーさん’ is the direct object, so we will need to mark her with the particle ‘を.’ We will conjugate the verb ‘待つ（まつ）’ into the past affirmative tense. We arrive at this sentence:
たけしさんはデパートの前に一時間メアリーさんを待ちました。
たけしさんはデパートのまえに一時かんメアリーさんをまちました。

‘ぐらい’ and ‘頃（ごろ）’ are similar in that each expresses approximation, but we use ‘ぐらい’ with durations and amounts and ‘頃（ごろ）’ with times.
To answer this question, we just need to fill in the blanks in the listed order and attach any required particles. First, we add the frequency word. We next add the duration phrase, though duration words and phrases can also be placed after the particle ‘を.’ Neither ‘毎日（まいにち）’ nor ‘一時間（いちじかん）’ requires a particle, but we will add the particle ‘ぐらい’ to the duration phrase to suggest that this is an approximation. Next, we add the location information. Here we see that Japanese word order is somewhat flexible so long as the subject comes first and the verb at the end. We finish the sentence by adding the direct object and verb. We will conjugate ‘勉強する（べんきょうする）’ into the past affirmative tense, remembering that ‘する’ verbs conjugate irregularly. We arrive at this sentence:
スーさんは毎日一時間ぐらい図書館で日本語を勉強します。
スーさんはまいにち一時かんぐらいとしょかんでにほんごをべんきょうします。

To answer this question, we just need to fill in the blanks in the listed order and attach any required particles. First, we add the frequency word. We next add the duration phrase, though duration words and phrases can also be placed after the particle ‘を.’ Neither ‘毎日（まいにち）’ nor ‘一時間（いちじかん）’ requires a particle, but we will add the particle ‘ぐらい’ to the duration phrase to suggest that this is an approximation. Next, we add the location information. Here we see that Japanese word order is somewhat flexible so long as the subject comes first and the verb at the end. We finish the sentence by adding the direct object and verb. We will conjugate ‘勉強する（べんきょうする）’ into the past affirmative tense, remembering that ‘する’ verbs conjugate irregularly. We arrive at this sentence:
スーさんは毎日一時間ぐらい図書館で日本語を勉強します。
スーさんはまいにち一時かんぐらいとしょかんでにほんごをべんきょうします。