问题补充：
―I’m sorry for being late. I should have phoned you earlier.
―. I have just arrived.
A. That’s no trouble.
B. You are welcome
C. That’s all right.
D. You can never tell
答案：
A. That’s no trouble.
B. You are welcome
(答案→)C. That’s all right.
D. You can never tell
解析：A项意思是：一点也不麻烦；B项意思是：不用谢；C项意思是：好的，行；没关系；D项意思是：你永远说不清楚。所填部分是对I’m sorry的应答，根据情景选C。
