Tony ______ his homework this morning before he went to school.A．has doneB．did
题型：不详难度：来源：
Tony ______ his homework this morning before he went to school.| A．has done | B．did | C．has done | D．will do |
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答案
| A |
解析
| 这题考查时态的用法：时间是before he went to school.说明完成作业是在上学前，用过去完成时，A项had done。正确。 |
举一反三
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