题目内容
句型转换:
Mike crossed the road after the light turned green. (改写句子使原意不变)
Mike didn't cross the road ______ the light turned green.
答案:until
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题目内容
句型转换:
Mike crossed the road after the light turned green. (改写句子使原意不变)
Mike didn't cross the road ______ the light turned green.