1. Ive sat on the bench for half an hour, then I started reading a book
2.Have you seen him today? Yes, he spoke to Alice by the university entrance
3.Pat was drawing when Jim ran into the room
4.I have not understood what Jack was talking about
5.Yesterday, she arrived to New York
6.Yesterday at 3 o'clock they had been flying to Paris
7. We have not heard what he was saying
8.When has this happened? It happened while you were talking with your secretary
9.I said to him that he should not be reading while he eats
10.Why have you made so many mistakes in the test yesterday? I was thinking about my friend