What _______ pity that you must leave now! It is such _______ great fun to have dinner with you．
| A．a; a | B．a; the | C．/; a | D．a; / |
Scientists say it may be five or six years ___ it is possible to test this medicine on human patients.
| A．since | B．after | C．before | D．when |
Tom’s and Joan’s ____ came to London last week.
| A．father-in-law | B．fathers-in-law | C．fathers-in-laws | D．father-in-laws |
You can hardly imagine the difficulty the woman had _____ her children.
| A．brought up | B．to bring up | C．bringing up | D．to have brought up |
No one ____ this building without the permission of the police.
| A．is leaving | B．is to leave | C．has left | D．will be leaving |
Jim has no idea where he lost his watch, ____ it’s ____ that he will get it back.
| A．and; unlikely | B．but; impossible | C．and; possible | D．but; probably |