. — They suggest the number of cars should be limited to stop air pollution. — the idea

问题补充：

. — They suggest the number of cars should be limited to stop air pollution.

— , the idea is not practical.

A. Sounds good as it

B. As it sounds good

C. As good it sounds

D. Good as it sounds

答案：

A. Sounds good as it

B. As it sounds good

C. As good it sounds

(答案→)D. Good as it sounds

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