Tina have known the truth or she would have told us.A. mustn'tB. shouldn'tC. can'tD. ne

问题补充：

Tina have known the truth, or she would have told us.

A. mustn

B. shouldn

C. can

D. needn

答案：

A. mustn

B. shouldn

(答案→)C. can

D. needn

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