I _____ have written to him because he phoned me shortly afterwards.
| A．ought to | B．must | C．couldn’t | D．needn’t |
They have their reasons for keeping their marriage___ secret for ___ moment.
| A．the; a | B．the; the | C．a; the | D．a; a |
You____________ television．Why not do something more active?
| A．always watch | B．too small a car |
| C．have always watched | D．have always been watching |
．Peter won't drive us to the station．He has___________ to take us all．
| A．a very small car | B．too small a car | C．a too small car | D．such a small car |
He had little idea that it was getting so late, ___________ ?
| A．didn't he | B．wasn't it | C．did he | D．was it |
Some of the suspects(嫌疑犯) refused to answer and kept their mouths shut．
| A．questioning | B．being questioned |
| C．questioned | D．to be questioned |