we were reading books ,----- he knocked the door.选填 A.as B.w

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we were reading books ,----- he knocked the door.选填 A.as B.while C.after

we were reading books, while he knocked the door.
答案B.while

While Mary was writing a letter, the children were playing outside.
玛丽写信时,孩子们在外面玩耍.

I lived in a hostel while I was a student.
我求学期间住在青年招待所里.

Please keep the watch for me while I go swimming.
我去游泳,请代我保管这表.
He took advantage of her while she was drunk.
在她喝醉时,他诱奸了她.

we were reading books ,----- he knocked the door.选填 A.as B.w We were having lunch,when someone knocked the door (问号处填介词或副改写下列句子He knocked at the door( We heard) jusy as we were leaving ,the postman (knocked/was knocking) .I knocked on the door ,but nobody _____ the door.A.closed B As we were listening to zhe radio,someone knocked at the doo 英文同义句转换.A man knocked at the door when he was watching TV.A We should read ____ we can A.as books as B.as many books as I knocked at the door as if i knocked at my own.的时态 I ＿＿ when she knocked at the door.A.cook B.cooks C.was cooki A：who knocked at the door?B:I thought is was Jack.这里为什么用was, 18. He knocked at the door _________ no one answered.