When I got off the crowded bus, I found my pocket _____ and the disk in it with the important documents gone.
---Obama took oath (宣誓)of office in the White House。 ---When was _____? ---____was on January 23,2013.
When changing lanes, a driver should use his turning signal to let other drivers know _________ .
China has been pushing the reform of public hospitals ______ all its citizens.
Everyone in the village is very friendly. It doesn’t matter ___ you have lived there for a short or a long time.
The new law states that people _ drive after drinking alcohol.