摘要：7． the sign beside the chairs．We can’t (sit)on them．
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We _______ talk loudly when we see the sign “ Be quiet ”on the right.
A. must B. mustn’t C. need D. needn’t
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We _______ talk loudly when we see the sign “ Be quiet ”on the right.
查看习题详情和答案>>
| A．must | B．mustn’t | C．need | D．needn’t |
We _______ talk loudly when we see the sign “ Be quiet ”on the right.
- A.must
- B.mustn’t
- C.need
- D.needn’t
We _______ talk loudly when we see the sign “ Be quiet ”on the right.
| A．must | B．mustn’t | C．need | D．needn’t |