.All hope of finding the missing plane ______, the relevant authorities declared the crew and passengers ______．
| A．giving up; were killed | B．giving up; killed | C．given up; killed | D．given up; killing |
We ________ the difficulty together, but why didn’t you tell me?
| A．should face | B．might face | C．could nave faced | D．must have faced |
He will _______ you next week if he is free.
| A．drop in | B．drop in at | C．drop in on | D．call at |
Oh, Mary, why are you killing your time this way ?Can’t you find something____ doing at all?
| A．useful | B．valuable | C．worth | D．good |
Many families were broken up and their members were killed in the _______ caused by the earthquake inYaan.
| A．chaos | B．chains | C．plains | D．masses |
After his journey from abroad , Richard Jones returned home, _____.
| A．exhausted | B．exhausting | C．being exhausted | D．having exhausted |