. Was it your son won the first prize last month that please you?A. whoB. thatC. whatD. w

问题补充：

. Was it your son won the first prize last month that please you?

A. who

B. that

C. what

D. which

答案：

A. who

(答案→)B. that

C. what

D. which

解析：可联系答.案.网客服索取。