I________at this school for two years already.
A.am studying
B.study
C.studied
D.have studied
Those foreign friends left Guangzhou________.
A.since last week
B.a week ago
C.for a week
D.since a week ago
You________that question three times.
A.already asked
B.have already asked
C.already have asked
D.asked already
Mike________the book for a month.
A.has bought
B.has had
C.had
D.has borrowed
We have been friends since________.
A.children
B.five years
C.five years ago
D.five years before
Li Hong has________the army for 2 years.
A.joined
B.joined to
C.been in
D.joined in