单选 说明选的原因The( )is very hard,I can't answer it.A.problem B.qu
The is very hard.I can't answer it.A.problem B.question C.ma
this question is very hard,i can't answer it(改未同义句)
The problem is too hard.I haven't ( )the answer A.WORKED ON
This question is very hard,I can't answer.
i can't work out the hard math-------选question还是problem,说明为什
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The problem is so hard that I can't work it out .如果去掉"it"就不能
The question is very easy..a child can answer it.A.Rather B.
The question is very hard.We can't solve it.
the problem is very difficult.we can't work it out.(合并)the p
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THE problem is very diffcult.he can't work it out .(合并)