题目

Find ways to praise your children often,_____ you’ll find they will open their hearts to you. A. till   B. or    C. and    D. but 答案：解析：C.考并列连词用法，分析前后分句逻辑关系，是条件或假设关系，而且“祈使句+and/or/otherwise…”固定句型所以选C.

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