Поставьте глаголы в скобках в нужную форму времён Simple, Progressive, Perfect.
1. Barbara and Mary are shop assistants. They work at
a supermarket. But today is Sunday, so they ... (to work). They ... (to walk) in the park.
2. Three times six ... (to be) eighteen.
3. Yesterday he ... (to arrive) at the office, ... (to prepare) some papers and ... (to go) to the meeting.
4. I ... (to work) in the lab from 10 till 5 o'clock tomorrow.
5. ... the chief engineer (to publish) his report? ... he (to publish) it last month?
6. The output of this plant... continuously (to grow).
7. The chief engineer came after the specialists ... (to put) the machine into operation.
8. Their laboratory ... (to have) a number of new electronic devices at its disposal.
9. My sister will call you up after she ... (to come) home.
10.Our expert ... (to work) full time, he ... (to work) only part time.
11. How long ... you (to be) married? - Oh, for five years already.
12. They were very close friends. They ... (to know) each other for ages.
13. At seven o’clock yesterday I... (to watch) TV.
14. By next Tuesday I ... (to finish) painting my bedroom.
15. He ... just (to buy) a new car.
16. There ... (to be) many forms of energy, namely, heat energy, mechanical energy, chemical energy and others.
17. The specialists ... (to test) this machine in two days. That will be on Monday.
18. Jack ... (to walk) down the street when he saw Joan.
19. He couldn’t get into the house because he ... (to lose) the key.
20. Tomorrow at three the Wimbledon final... already (to start).