问题补充:
I’d like to see you off at the airport. Could you tell me ?
A. when your plane took off
B. when did your plane take off
C. when your plane takes off
D. when does your plane take off
答案:
A. when your plane took off
B. when did your plane take off
(答案→)C. when your plane takes off
D. when does your plane take off
解析:本题考查宾语从句。宾语从句要用陈述语序,排除B 和 D;结合I’d like to see you off at the airport,可知不是过去的事,排除A。