Question

I’d like to see you off at the airport. Could you tell me _____ ?

1. A.
   when your plane took off
2. B.
   when did your plane take off
3. C.
   when your plane takes off
4. D.
   when does your plane take off

Answer 1

C
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。