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 |
. ----Are you planing to hunt for a new job? ----I’m not sure. I ____ go abroad to study further instead.
A must B might C would D should
-----How beautifully he draws!
------Yes, the little boy has a ______ for drawing. He will be a painter______.
| A．present; on time | B．gift; in time |
| C．power; at a time | D．sense; at one time |
Don’t you think it is _______ bad manners to stare at foreigners in _______ curious manner?
| A．the; a | B．/; / | C．/; a | D．the; the |
______ is often the case, we have worked out the production plan.
| A．Which | B．When | C．What | D．AS |
The flu is believed _____by viruses that like to reproduce in the cells inside the human nose and throat.
| A．causing | B．being caused | C．to be caused | D．to have caused |