—Must I pay for the bill now boss?—No you pay for it after the meal.A. needn’tB. can’tC

问题补充：

—Must I pay for the bill now, boss?

—No, you pay for it after the meal.

A. needn’t

B. can’t

C. may

D. should

答案：

A. needn’t

B. can’t

(答案→)C. may

D. should

解析：needn’t不必；can’t不能；may可以；should应该。句意:老板，现在我必须付账单吗？——不，你可以在吃晚饭后再付款。