变更车道时，应提前减速并开启转向灯，确认安全后，再驶入指定的车道。
参考答案：对
---How much did the new watch your sister?
---She 350 yuan for it.
A．cost; paid
B．spend; cost
C．pay; cost
D．take; paid
The first thing ______ I am going to do this evening is to go to sleep.
A．what
B．that
C．which
D．who
