—Is it good a look up every new word when I e across it in reading?
—No,You because 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
网友回答
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。