-- _____is that used for?---_____ the floor.
After the long journey, the three of them went back home,___________.
There is some doubt _______ we can get the first place in the competition.
Don’t forget to insure against theft ______ you have things ________ .
In the Asian Games in South Korea, the Chinese team won _______ gold medals as Japan.
When word came _______ Zhang Bichen became the winner of the “Voice of China 2014”, her fans, greatly excited, stood up cheering for her.