—Is it OK if I have another cup of coffee?
—Of course, .
A. no problem
B. don’t worry
C. no hurry
D. help yourself
网友回答
A. no problem
B. don’t worry
C. no hurry
(答案→)D. help yourself
解析：考察交际用语。No problem 没问题 don't worry别担心no hurry 别着急 ，help yourself 请自便，别客气，随便吃
句意为，---我再喝一杯咖啡没关系吧？---当然,请自便。