Do they -------return all the books?A.has to B.must C.have to D.n_英语解答

Do they -------return all the books?A.has to B.must C.have to D.need

人气：385 ℃　时间：2020-06-02 23:23:31

解答

C正确.
A.has 改为 have .
B.如用must ,则是：Must they return all the books?
D need后面应该加 to.