Last night I met Mr. White used to be my maths teacher.A. whichB. thatC. whoD. whom

问题补充：

Last night I met Mr. White , used to be my maths teacher.

A. which

B. that

C. who

D. whom

答案：

A. which

B. that

(答案→)C. who

D. whom

解析：可联系答.案.网客服索取。