1、The maths problem is too difficult for us to ( ).A、work it out Bwork out 2、I didn’t know_ in Guangzhou.How long ____ here?A.were,have been B.were,have come急,说明理由

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1、Themathsproblemistoodifficultforusto().A、workitoutBworkout2、Ididn’tknow___inGuangzhou.Howlong_____

1、The maths problem is too difficult for us to ( ).A、work it out Bwork out 2、I didn’t know___ in Guangzhou.How long ______ here?A.were,have been B.were,have come急,说明理由
1、The maths problem is too difficult for us to ( ).A、work it out Bwork out 2、I didn’t know
___ in Guangzhou.How long ______ here?
A.were,have been B.were,have come
急,说明理由

1、The maths problem is too difficult for us to ( ).A、work it out Bwork out 2、I didn’t know___ in Guangzhou.How long ______ here?A.were,have been B.were,have come急,说明理由
1、B
too…to…结构是简单句中的一种结构.所以不需加it,加it之后就是一句句子拉~
此句还有一种表达是：The maths problem is so difficult that we can't work it out.
2、A
come是短暂性动词,不能与how long提问的短语连用
have been in 指在某地呆了一段时间,后接for+一段时间或其他表示一段时间的短语.

两个都是A 理由是感觉语感的感

1 A
work out 算出，解答出，代词作宾语要用宾格放中间。
另外，too ... to do sth 太……而不能。
2 A
因为COME 是终止性动词，不能与HOW LONG 等连用。
如果不明白，请再问；如果对你有所帮助，
请点击本页面中的“选为满意回答”按钮，谢谢！第一题着你的说法是选B啊？...

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1 A
work out 算出，解答出，代词作宾语要用宾格放中间。
另外，too ... to do sth 太……而不能。
2 A
因为COME 是终止性动词，不能与HOW LONG 等连用。
如果不明白，请再问；如果对你有所帮助，
请点击本页面中的“选为满意回答”按钮，谢谢！

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