— When ______ the train ______ (leave)?
— In half an hour. [ ]
A. did, leave
B. has, left
C. is, leaving
D. will, be leave
答案:C
— When ______ the train ______ (leave)?
— In half an hour. [ ]
A. did, leave
B. has, left
C. is, leaving
D. will, be leave
答案:C