His mother had thought it would be good for his character to ________ from home and earn some money on his own．

A．run away

B．take away

C．keep away

D．get away

Having a trip abroad is certainly good for the old couple, but it remains ________ whether they will enjoy it．

A．to see

B．to be seen

C．seeing

D．seen

The price ________, but I doubt whether it will remain so．

A．went down

B．will go down

C．has gone down

D．was going down

－How soon can you finish the large picture?

－It will be two months ________．

A．after I finish it

B．before I will finish it

C．before it is finished

D．since it has been finished

I know I didn't forget ________ my camera with me because I clearly remember ________ it in my bag．

A．taking; to put

B．to take; to put

C．to have taken; putting

D．to take; putting

－How time flies! It's already twelve o'clock．

－Oh, really? I ________ it at all．

A．don't realize

B．didn't realize

C．haven't realized

D．hadn't realized

－The radio isn't working．I wonder what's happened to it．

－Have you ________ the batteries?

A．tried to change

B．tried changing

C．managed to change

D．manages changing

Some people do not know how to use the directory, and they ________ time looking for the telephone numbers in the address book．

A．spend

B．take

C．waste

D．cost

The founding of the People's Republic of China is a great ________ in the history．

A．affair

B．business

C．matter

D．event

－I dropped in at your house at about ten last night, but you weren't in．

－I ________ regular exercises at the club．

A．did

B．was doing

C．had done

D．have been doing