Срочно! Помогите сделать упражнения по английскому! У меня очень плохо с ним :(

Ex. 131
1. They were walking along the street, when she suddenly remembered what she had wanted to say.
2. Don't you remember how I said that we'd be late for the meeting?
3. When I met her 20 minutes ago, her eyes were red. I understood that she had been crying.
4. He has been trying to find his son for half an hour. I think the boy have hidden somewhere. (I think that the boy has hidden somewhere.)
5. When she came home, she understood that she had forgotten about her meeting (appointment) with the dentist. She had been dialing the (phone) number for nearly half an hour, but the line was busy (engaged.)
6. His friends have been waiting for him for an hour, but he hasn't come yet. If he doesn't come in 10 minutes, they'll go to the disco without him.
7. We agreed when she offered us to go to the theatre. She promised the performance (the play) to be interesting. (She promised that the performance would be interesting.)
8. I came home at 7. I had dinner and began to watch TV. I had been watching it for half an hour, when I remembered that I had failed to ring up my cousin. (that I hadn't rung up my cousin.)
9. We didn't think him take part (be involved) in this work. (We didn' think that he would take part in this work. He is always trying to avoid any additional tasks.
10. As soon as I get free, I'll ring you up. I have never participated in such projects yet, that's why I don't know when I'll have free time.

Для одного вопроса достаточно: пальчики устали печатать: -)