There is a lot of traffic on the road now. You play football there!A. mustB. needC. mustn

问题补充：

There is a lot of traffic on the road now. You play football there!

A. must

B. need

C. mustn’t

D. needn’t

答案：

A. must

B. need

(答案→)C. mustn’t

D. needn’t

解析：句意：现在道路上的车辆很多。你一定不要在那踢足球。根据句意，排除A、B，而needn’t表示不需要，故选C。