-You must be excited about going to Japan for schooling.　- but I’m afraid I can’t do well

问题补充：

-You must be excited about going to Japan for schooling.

-，but I’m afraid I can’t do well because my Japanese is poor.

A. Never mind

B. Well，I ought to

C. I don’t know yet

D. Certainly not

答案：

A. Never mind

(答案→)B. Well，I ought to

C. I don’t know yet

D. Certainly not

解析：应为I ought to be excited about…Never mind用来回答道歉语，Certainly not用来回答别人的请求和询问等。【译文】到日本去读书，你一定很激动。——喔，我应该激动。但日语不好，我会担心做不好的。