—Have you ever visited the Water Cube? —Yes. When I served as a volunteer in Beijing, I it twice.
#102056
A
have visited
B
visited
C
had visited
D
had been visiting
推荐题目
一When shall we start the restoration of the historic buildings?一Not until our plan________ by the committee．
#103180
A
will be approved
B
approves
C
is to approve
D
has been approved
Great changes _______ in this city over the past five years.
#102545
A
took place
B
have taken place
C
were taken place
D
have been taken place
----- Where was I ? ------ You _________you didn’t like your father’s job.
#103414
A
had said
B
said
C
were saying
D
had been saying
It ______ be better if I could earn enough money to buy a private car.
#103838
A
will
B
must
C
shall
D
would