When did you leave the bus station?()I saw him get on the bus and sit down.
问题描述:
When did you leave the bus station?()I saw him get on the bus and sit down.
A.Before B.After C.Since D.Until
答
D.Until,这是一个省略的回答,完整的回答句子应该是I didn't leave the bus station until I saw him get on the bus and sit down.
所以答案最合适的是D.