I was on the highway when this car went past fol. Lowed by a police car. They ______ at least 150 kilometers an hour.
| A．should have been doing | B．must have been doing |
| C．could have done | D．would have done |
Have you got a free evening next week? , let’s have dinner.
| A．While so | B．Since so | C．When so | D．If so |
Oil prices have risen by 32 percent since the start of the year，______ a record US $ 57.65 a barrel on April 4.
| A．reached | B．reaching | C．to reach | D．to be reaching |
_____was known to them all is that Bob had broken his promise____he would give them a rise.
| A．As; which | B．What; that | C．It; that | D．It; which |
Please tell me how the accident _________ . I am still in the dark.
| A．come to | B．come by | C．come across | D．come about |
Jack always sleeps late on Sundays. I am sure he _______ when we get home.
| A．is still sleeping | B．is to be sleeping |
| C．will still be sleeping | D．will have been sleeping |