38页19.must I return the book this afternoon ?
问题描述:
38页19.must I return the book this afternoon ?
No ,you ---.but do you ---return it before supper ?
A.needn't ,must B.mustnt ,can C.mustn't may 理由
答
A你把这话背熟,下次考试就没问题了.
记住了,加了do就是强调预期,后面跟上must或have to.