The robber told him that he had better keep silent he wanted to get into trouble. A. if B.——青夏教育精英家教网—

摘要： The robber told him that he had better keep silent he wanted to get into trouble. A. if B. unless C. otherwise D. whether

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The robber told him that he had better keep silent ______ he wanted to get into trouble.

A. if B. in case C. otherwise D. unless

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