Make one sentence from two, using the best Relative clause: This is the students. I borrowed his book

I. Make one sentence from two , using the best Relative clause.
1. This is the students. I borrowed his book.
-This.........................................................................
2. The girl chatted with him yesterday. She arrived here at 6:30
- The........................................................................
3. Mu father is a doctor. He is years old.
-My...........................................................................
II. Combine the following sentences, using Preposition + Whom or Which
1. He asked me a lot of questions. I couldn't answer most of them
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2. The man speaks English very fast. I talked to him last night.
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III. Rewrite of the following sentences, using A Present or Past Participial
1. Students who arrive late will not be permitted to enter the classroom.
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2. The scientists who are researching the cause of cancer are making progress
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