Задание 3. Open the brackets using the correct form of the verb.
1. He (not to see) me as he (to read) when I (to come) into the room.
2. Helen (to learn) English at the institute. She (to learn) this language since last autumn.
3. Petrov (to leave) Moscow yet? – No, he is still in Moscow.
4. What you (to do) here? – I (to wait) for my friend.
5. He (to sit) in the garden when the storm (to break) out.
6. When I called for my friend, his sister (to tell) me that he (to leave) half an hour before.
7. What you (to do) at 8 p.m. tomorrow? – I (to work) on my report.