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—Can you keep a secret?

—You ________ worry—I'm not going to mention it to anyone.

A．needn't B．couldn't

C．mustn't D．won't

 

A

【解析】答案：A　考查情態(tài)動詞。句意為：你能幫我保守秘密嗎？你不必擔心，我不會向任何人提及的。needn't不必要；couldn't不能夠；mustn't禁止；won't將不會。根據句意可知，答案A符合語境。

 

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