An awful accident , however, occur the other day. [ ] A．doesB．did C．has toD．had
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An awful accident ________, however, occur the other day.
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A．doesB．didC．has toD．had to
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答案：
解析：这是一个强调谓语的句子，时间状语the other day表示过去，要用一般过去时态，用did＋动词原形，表示强调。 |