题目内容
20、Students shouldn’t be given so difficult a problem ___ they cannot work out.
A.that B.which C.while D.As
试题答案
20、D
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Students shouldn’t be given so difficult a problem ___ they cannot work out.
A.that B.which C.while D.As
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Students shouldn’t be given so difficult a problem_________they cannot work out.
| A.that | B.which | C.while | D.As |