1. The engineers … the engine from 5 till 7 tomorrow.
a) will test
b) will have tested
c) will be testing

2. We … things for two hours by 8 o’clock yesterday.
a) packed
b) had been packing
c) were packing

3.His father … as an engineer since he was born.
a) is working
b) works
c) has been working

4. You … it last week. I’m really disappointed with you.
a) may have done
b) can have done
c) should have done

5. At that moment I … him.
a) could have kill
b) can kill
c) could have killed

Спасибо!