By the end of the last month, I _____________ all the CDs of Justin Bieber.
#41903
A
collect
B
collected
C
have collected
D
had collected
推荐题目
The meeting ______ for a week .
#37543
A
has finished
B
has ended
C
has been over
D
has been in
The volunteers      a lot of help to the community for nearly ten years.
#36876
A
offered
B
are offering
C
will offer
D
have offered