问题补充：
—Sorry. I’m afraid I can’t go to your party. I am busy with tomorrow’s test now.
—.
A. My pleasure
B. It doesn’t matter
C. Not at all
D. You are welcome
答案：
A. My pleasure
(答案→)B. It doesn’t matter
C. Not at all
D. You are welcome
解析：对于别人的歉意，可以用B来表示没关系，故选B
