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(2013·吉林长春一模)—Please don't tell anybody.
—I ________. I promise.
A.can't B.don't
C.won't D.mustn't
C
选C 考查情态动词。句意:“请不要告诉任何人。”“我不会的,我保证。”can't“不可能,不能够”;don't助动词,表示否定;won't“不会的”,是will not的缩写;mustn't表示禁止。根据句意应选C项。
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