英语
Having checked that the doors were closed,and _____ all the light were off,the boy opened the door to his bedroom.为什么填when不填that
Having checked that the doors were closed放在句首是一个补充性的东西，你完全可以丢弃，后两段才是联系的，你可以把句子压缩为 _____ all the light were off,the boy opened the door to his bedroom. 现在你知道选择哪个了吧
答：1.D。此句型为非限制性定语从句。答案which指代"the sun gives off light and heat". 2.D。 sth和 ne是平常练习...详情>>
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问：working hard vs. hard working
答：there are no defferent.详情>>
