the scholar has make another break-through in this field,___
the scholar has make another break-through in this field,___ of importance to the progress of science and technology.
A:I think which is B:which I think it is C which I think it is D:about which I think it is
我选的B 为什么错了?
还有,请大家帮忙说下much的用法
A:I think which is B:which I think it is C which I think it is D:about which I think it is
我选的B 为什么错了?
还有,请大家帮忙说下much的用法
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你能帮帮他们吗