—I don't know_________to do with this maths problem.It's too

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—I don't know_________to do with this maths problem.It's too hard.
— You can ask your classmates or teachers for help.
A.which B.how C.what D.when

你把疑问句改成陈述句看看：
to do___with this mathe problem.
do是及物动词,所以后面得接宾语,宾语得是名词性质的,就是what啦,how是用作状语的.
加油学哦

- I don't know_________to do with this maths problem.It's to 1.-I don't know __to do with this problem.It's too hard. I don not know _____ with this problem.It is too hard._You c i don't know___with this problem it is too hard 为什么是what to I don't know__ with this problem.A,what to do Bhow to do This maths problem is too hard.I think___people can work it I still don't know how to solve this maths problem.Can you g i don`t like this sweater it`s _____expensive 1.too much 2.t what can I do ,what can I say ,don't say it's too late this maths problem is _______ and i can do it ______ . This maths problem is and I can do it .A easy；easily B easil 选择填空（）1. I don’t know（）work out the problem . It’s too hard