2. 外语
  3. To drive a car safely, it is ______ good brakes.

To drive a car safely, it is ______ good brakes.

admin2009-02-10  20
问题 To drive a car safely, it is ______ good brakes.
选项 A、essential with
B、essential having
C、essential to have
D、essential have
答案C
解析 句意：汽车要安全行驶，最根本的是刹车要好。不定式作主语时，通常使用形式主语it；对此应特别注意，避免误用。因此C为正确答案。
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