题目内容
— Must they clean and tidy the classroom now?
— No, they . It after school in the afternoon.
| A.mustn’t; must clean | B.needn’t; must clean |
| C.mustn’t; need be cleaned | D.don’t have to; can be cleaned |
D
解析
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题目内容
— Must they clean and tidy the classroom now?
— No, they . It after school in the afternoon.
| A.mustn’t; must clean | B.needn’t; must clean |
| C.mustn’t; need be cleaned | D.don’t have to; can be cleaned |
D
解析