Look! Many people the buses at the bus stop. A. wait forB. waited forC. will wait forD. ar

问题补充：

Look! Many people the buses at the bus stop.

A. wait for

B. waited for

C. will wait for

D. are waiting for

答案：

A. wait for

B. waited for

C. will wait for

(答案→)D. are waiting for

解析：根据中得关键词look可知，此句要用现在进行时，又因many people是复数，故系动词be要用are，动词wait 是不及物动词跟宾语时要用介词for，故选D。