—When did you become a volunteer?
—I________in this group since 2008.
A.joined
B.took part
C.have joined
D.have been
Basketball is so popular a game that________people play it for fun and exercise.
A.million of
B.millions of
C.millions
D.two millions
—I have bought a nice dress.
—Where________you________it?
A.have;bought
B.did;buy
C.will;buy
D.do;buy
He wants to________you on the question of how to learn English well tomorrow.
A.get back
B.talk with
C.tell
D.speak
Have you ever been to Shanghai________?
A.a month ago
B.yesterday
C.ago
D.before
—Have you locked the windows________?
—Yes,I have________locked them.
A.already;already
B.yet;yet
C.yet;already
D.already;yet