It isn't cold enough for there a frost tonight so I can leave Lim's bike out safely.A. w

问题补充：

It isn cold enough for there a frost tonight, so I can leave Lims bike out safely.

A. would be

B. being

C. was

D. to be

答案：

A. would be

B. being

C. was

(答案→)D. to be

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