How____You say that you really understand the whole test if you have covered only part of it?

问题描述:

How____You say that you really understand the whole test if you have covered only part of it?
A.Can B.must C.need D.may.选几,求翻译

我选 can
如果你只能解答测试题的一部分,你能说你真正理解了整个测试吗?
请参考.