2. 考研
  3. When enough of the tree ______chopped away, the tree falls.

When enough of the tree ______chopped away, the tree falls.

admin2019-08-08  3
问题 When enough of the tree ______chopped away, the tree falls.
选项 A、is
B、have
C、was
D、were
答案A
解析 tree为单数形式，所以谓语动词用is。
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考研英语一

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