______April 14 th, 2010, a terrible earthquake(地震) happened in Yushu, Qinghai Province.A. In B. At C. On
Do you go ______ a school trip ______ a museum every year?
Tom is a true friend, _____ I didn’t like him at the _____.
You must be tired now. Why not ____ a rest?
The little girl is very young _____she can take care of herself well.
Our Math teacher often gives us __________ on how to learn Math.