问题补充：
—Could you tell me?
—Sorry，I have no idea.
A. how old is your son
B. that he will come here soon
C. whether is it fine tomorrow
D. who is going to give a talk at the meeting
答案：
A. how old is your son
B. that he will come here soon
C. whether is it fine tomorrow
(答案→)D. who is going to give a talk at the meeting
解析：英语宾语从句中一般为陈述语序。句意：根据下文，抱歉，我不知道。选项AC为倒装语序，选项B语义不符，故选D，你能告诉我谁要来在会议上作报告吗？
