选择填空（）1. I don’t know（）work out the problem . It’s too hard

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选择填空（）1. I don’t know（）work out the problem . It’s too hard
选择填空
（）1. I don’t know（）work out the problem . It’s too hard
A.when to B.where to C.how to
（）2.There are too many kinds of shirt in the shop . We don’t know （）
A.what to answer it B.which to choose C.how to answer it
（）3..Mr . Wang didn’t tell me the time when he arrived , so I don’t know （）to meet him .
A .where .B.when
C.why
（）4.---- Did he（）you to join the English club to improve English ?
---- Yes , he often gives us some good ( )
A.advise , advice B.advise , advices C.advice , advices

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选择填空（）1. I don’t know（）work out the problem . It’s too hard 1.-I don't know __to do with this problem.It's too hard. The problem is very hard,I don't know how to work out._____ i can't work out the problem.it's too difficult同义句转换 i have 英语疑难问题1.The problem is hard.Nobody can work it out.（合并为一句） T i don't know how to work out the math problem 同义句 1.It's _for th buy to work out the Maths problem.It's too di I don't know how to -------------the problem 单项选择 A work at The problem is difficult.I can't work it out.（连成一句） The problem is so hard that I can't work it out .如果去掉"it"就不能 I don not know _____ with this problem.It is too hard._You c the math problem is too hard to work ------out