Question

4. Put the verb into the most suitable form, the Past Perfect or the Past Indefinite Tease.

Поставьте глагол в Past Perfect или Past Indefinite.

1. I (to give) him the book his teacher (to recommend). 2. Tom wasn't there when I (to arrive). He just (to leave) home. 3. By the time they (to arrive) the film (to finish). 4. He knew that he (to make) a serious mistake. 5. I felt that I (to meet) this man somewhere before. 6. By two o’clock Ann (to ask) all the students.

Answer 1

1.I gave him the book his teacher had recommended.
2. Tom wasn't there when I arrived. He had just left.
3. By the time they arrived the film had already finished.
4. He knew that he had made a serious mistake.( не точно ) 
5. I felt that I had met this man somewhere before.
6. By two o'clock Ann had asked all the students.( не уверена )