How long___it___you to work out such a difficult problem?
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How long___it___you to work out such a difficult problem?
A:did;take B:does;take
C:did;cost D:does;cost
说下为什么这么填
A:did;take B:does;take
C:did;cost D:does;cost
说下为什么这么填
![How long___it___you to work out such a difficult problem?](/uploads/image/z/5417495-71-5.jpg?t=How+long___it___you+to+work+out+such+a+difficult+problem%3F)
应该选A.
首先,题目的意思是“你用了多长时间把这么难的问题做出来了?”,所以是已经做出来了,用过去式,B、D排除
然后就是抠短语~
sth cost sb.take...to...这些都是常用短语
综上所述,选A
首先,题目的意思是“你用了多长时间把这么难的问题做出来了?”,所以是已经做出来了,用过去式,B、D排除
然后就是抠短语~
sth cost sb.take...to...这些都是常用短语
综上所述,选A
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