A:Don't you think we 'd leave for the concert now?你不觉得我们现在该出发去听音乐会了吗?
B:What time dose it start?音乐会什么时候开始?
A:In about 25 minutes.大概25分钟之内就开始。
B:Then we'd better get start.那么我们最好马上去。