---I came all the way to inform you of the time and place of the meeting.

---You could have _____ yourself the trouble.

A．shared

B．spared

C．cost

D．removed

城市道路横断面由( )组成。

A．车行道、人行道、绿地

B．人行道、车行道

C．车行道、人行道、绿地、分隔带

D．人行道、车行道、分隔带