1．Mrs.Weng came back from France in 2010. She _________ there for four years.

A．works

B．worked

C．has worked

2．― Mr. Lee    to a student when I entered the classroom this morning.
―He is very patient    he is young.
A．talking; but B．talks; though

C．was talking, though D．talked, however

3．Our country ______the sixth population census(人口普查) already.
A．finished B．has finished

C．will finish D．finishes

4．I called you, but nobody answered. Where_______ you?
A．is B．are C．was D．were

5．Betty will ring me up when she _______ in Beijing.
A．arrive B．arrives

C．arrived D．will arrive

6．I ______my hometown for a long time, I really miss it!
A．left B．went away from

C．have left D．have been away from