1.He was sleeping late _______ someone knocked on the door.

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1.He was sleeping late _______ someone knocked on the door.
A.when B.while C.as D.after
Yeah.____ we had
A.What fun B.How a fun C.What a fun D.How fun
Do you remember what ______ (你在做什么） at nine yesterday
He saw a cat ____ (on,in)the tree and some oranges ___ (on,in)the tree ,too .

1.A
while引导的时间状语从句必须用延续性动词,而knock on是瞬间性动作；
as强调主从句动作时间一般是持续相同时间,此处一长(sleep)一短(knock)；
如果用after的话,则主句应该用过去完成时而不是过去进行时.
此题中的A when是并列连词引导两个并列句,意思是“就在这时”,相当于and then.
2.A
fun是不可数名词,无a无复数形式,排除BC；
how修饰形容词funny,而不是名词fun,排除D.
3.you were doing
at nine yesterday决定了宾语从句必须用过去进行时,且宾语从句用“疑问词 + 陈述句序”.
4.in,on
树上外来之物用in,树生之物用on.

1.He was sleeping late _______ someone knocked on the door. he was sleeping late____someone knocked on the door 1.when 2 i was sleeping late ___when _someone knocked on the door 为什么 ( ) Someone knocked at the door ______ he was asleep. I was cleaning my bedroom while someone knocked on the door改 He was just falling asleep when someone knocked at the door. 英语翻译翻译:1.someone knocked at the door when I was having break He knocked at the door again( )again.There was on sound. When someone k___ the door,I was sleeping. he was simply out when I knocked on his door He was having dinner____a unknown woman knocked at the door. What___you___when someone knocked at the door?