what _the twins _ when it rained?A,are,doing B,at the fr

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what ___the twins ___ when it rained?A,are,doing B,at the front of C,in front of D,in the front of

没有正确的选项呀,正确的应该是：What ( were ) the twins( doing ) when it rained?
再问：可以告诉我什么原因吗？
再答：因为when 后的时态是一般过去时，意思‘当一个动词发生的时候，另一个动作正在进行’，故主句用过去进行时。
再问： Mr Green saw the accident ___in the street the day before yesterday. A,happen B,happens C,happened D,to happen 并解释一下原因好吗？
再答： A （固定用法：see sb/ sth do sth ; see sb/sth doing sth )
再问： I went to bed at elevern o'clock last night , but my mother _____at her desk A,still was working B,was still working C,still worked D,worked still 解释一下原因！thank you
再答： B ( 根据at elevern o'clock last night ‘昨晚11点钟的时候’，妈妈还在工作）该采纳了吧？

what ___the twins ___ when it rained?A,are,doing B,at the fr a.What were you doing when it rained.b.What were you doing w what what are the twins doing 翻译 ___ the books ___the desk?A.What,in B.Is,on C.Are,in D.What, What are the red boots ___? Leather. A making of B making fr they are ( ) a.the twins b.twins what are you doing it ( )? A.at B.for C.with D.in The twins are good at playing the piano.The twins ___ ___ in what( )they doing when they heard the news?a.were b.are c.wa The twins（）good at sports A both are B are both Give me a r it 什么 when they left the station.A,has rained B,is raining C It rained yesterday and I stayed at home____ day.A.all the B