I think your mother isyou at the school gate at the moment.A. waitingB. waiting forC. wait

问题补充：

I think your mother isyou at the school gate at the moment.

A. waiting

B. waiting for

C. waiting for

D. is waiting

答案：

A. waiting

(答案→)B. waiting for

C. waiting for

D. is waiting

解析：wait是不及物动词，后跟宾语时要加介词for。