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问题: 请问选哪个? 谢谢!

This was such a ______ test ______ few of the students could work out.
A. easy; that B. challenging; as
C. tough; that D. exciting; as

解答:

选B.
1,首先,前面有冠词a,因此,排除A.和D.。
2,其次,后面的动词work out缺少宾语。可以断定,后面应该是是一个定语从句。而这个定语从句,又与such连用,所以就只能是such…as引导定语从句。