题目

____ she couldn’t understand was ____ fewer and fewer students showed interest in her lessons.        A.What; because         B.That; what                            C.What; why              D.Why; that k+s-5#u  答案:C 解析: 本题考查主语从句和表语从句。第一空作understand的宾语,所以用what。 why与because都可引导表语从句,但why从句说明结果,because从句说明原因。
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