I have no idea _______ we can do with these waste materials.A．thatB．whatC．wheth_刷题宝

题干

I have no idea _______ we can do with these waste materials.

A．that

B．what

C．whether

D．if

上一题下一题 0.64难度单项选择更新时间:2015-07-29 05:49:31

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