高等继续教育 / 统考英语词汇与语法
正确率:统考%
54、They have planted _ _ _ _ _ _ _ trees in SaiBei, It's a "Great Green Wall" of trees.
A.million
B.millions
C.several
D.millions of
A.million
B.millions
C.several
D.millions of
参考答案:
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