If you talk about it with me please wait till I finish my work at hand.A. canB. mayC. mu

问题补充：

If you talk about it with me, please wait till I finish my work at hand.

A. can

B. may

C. must

D. should

答案：

A. can

B. may

(答案→)C. must

D. should

解析：本题考查情态动词的基本用法。can表示能力，能够，may表示可以，must是必须，偏要，should应该，从上下文如果你偏要和我谈论它，请等我完成手头的工作。判断用C。