Not only oral English but also written English _____ important.
A.is B.are C.was D.were
—We’ll make a trip to Hainan Island next weekend. Will you go with us?
—No, I can’t _____ it at present.
A.afford B.save C.offer D.accept
—How many students are there in the classroom?
—_____ I don’t know where they have gone.
A.No one. B.None. C.Nobody. D.Nothing.
The rubbish _____ is produced every day is becoming a serious problem in cities around the world.
A. what B.that C.who D.whose
More and more trees were cut down. _____, many animals are dying out.
A.In the end B.So that C.As a result D.At last
We should often keep _____ touch with each other, because we are good friends.
A.on B.to C.in D.up
