. The experiment has_________ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.
— Had we been more careful, the accident might not have happened. — But we _____ at that time.
It’s reported that by the end of this year the output of cars of the factoryby about 20%
—Tom, it’s time that you _______your own clothes. —I would rather you _______that for me just like before.
—I'm going to the USA. —How long you there? A. are; stayingB. are; stayedC. have; stayedD. did; stay
The news came as no surprise to me. I for some time that the factory was going to shut down.