问题补充:
—Is it good a look up every new word when I come across it in reading?
—No,Youbecause you are likely to guess the meaning from the context.
A. can’t
B. mustn’t
C. don’t have to
D. ought not to
答案:
A. can’t
B. mustn’t
(答案→)C. don’t have to
D. ought not to
解析:本题考查情态动词。don’t have to不必;mustn’t禁止、不允许。