David, someone called you last night.—Oh, who was

Eric is an English boy. _____ is____ friend.

It has been reported that some government leaders______ their authority and position to get illegal profits for themselves.

Tom, why not stop _________ a rest— Oh, no, mum. It’s so interesting that I can’t stop _________ the kite.

It is said that many kids are worried about the year 2012, _____ , they think the earth will be destroyed by disasters．