-How much is the pair of shoes?-Twenty dollars ____ enough.A. is B. are C. am
—Where is Jim? —I don't know.Maybe he is______.
After a serious illness,he finally_____the importance of giving up smoking.
Can you tell me what happened_______the little boy just now?
After the heavy rain,the river_______a lot.
Your room is in a mess.Please______it_____.