You don't have to finish the work today. You can finish it next week. A. mustn't B. can't C. needn't
The man makes a living _______ teaching.A.without B.with C.by
He has written many books, but _______ of them are good.A.few B.many C.any
There is _____ boat in ________river.A. a; the B. the; a C. a; a
Some of my friends are interested in science,but none of them can tell_____.
—I’m worried about the coming test. —You should work hard for it,_____you’ll have to take it again.