摘要：We cannot figure out quite a number of insects,birds,and animals are dying out. A.that B.as C.why D.when 解析:why引导宾语从句.并在从句中作原因状语. 答案:C
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We cannot figure out _______ quite a number of insects, birds, and animals are dying out.?
A. that B. as?
C. why D. when?
查看习题详情和答案>>We cannot figure out____________quite a number of insects, birds, and animals are dying out.
A. that B. as C. why D. when
查看习题详情和答案>>We cannot figure out_______quite a number of insects,birds,and animals are dying out.
A.that B.as C.why D.when
查看习题详情和答案>>