题目内容
The math problem was _________ difficult __________ none of us worked it out.
A.very; that | B.too; to | C.so; that | D.enough; that |
C
试题分析:句意:这道数学题太难了以至于我们中谁也做不出来。so...that...如此……以至于……;too...to...太……而不能,to后接动词。故选C.
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