( A ) 10. The zipper is that we can seezippers almost everywhere!A. such a useful inventionB. so an useful inventionC. such an useful inventionD. a so useful invention 题目和参考答案——青夏教育精英家教网—

题目内容

( A ) 10. The zipper is _ that we can see

zippers almost everywhere!

A. such a useful invention

B. so an useful invention

C. such an useful invention

D. a so useful invention

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