问题
Shall we meet at the station at 7 am—In fact, we _______. The train _______ until 9 a.m.
A:mustn’t; doesn’t leave
B:mustn’t; leaves
C:needn’t; won’t leave
D:needn’t; will leave
B:mustn’t; leaves
C:needn’t; won’t leave
D:needn’t; will leave
正确答案是：
