2. 外语
  3. Now there is a danger______ the ground may fall in (沉下) under the heavy traffic.

Now there is a danger______ the ground may fall in (沉下) under the heavy traffic.

admin2010-02-22  118
问题 Now there is a danger______ the ground may fall in (沉下) under the heavy traffic.
选项 A、whether
B、if
C、/
D、that
答案D
解析
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