Выберите правильную форму глагола.1. Mr. Black asks if I (have signed/ had

Изберите правильную форму глагола.
1. Mr. Black asks if I (have signed/ had signed) the contract.
2. These computers are мейд in Taiwan. I thought they (are/ were) American.
3. My boss needs more time to do the report. I thought he (finishes/ had finished) it.
4. Mr. Bell asked us what discount (we could give/ could we give) him.
5. We expected that model (will be/ would be) very popular on the market the following year.
6. The office manager asked why we (send/ had sent) the enquiry to Blakeamp;Co so late.
7. I couldnt find Mr. Arnoux, so I asked his secretary (where she was/ where was she).
8. The secretary said she (must/ had to) come to work at 6.30.
9. The director asked his secretary (not to receive/ didnt receive) any visitors.
10. The Prime Minister says that the unemployment (is falling/ was falling) this year.