— When _______ you _______ to learn to ride your bike？ — I really can’t remember the time.
#41700
A
do; begin
B
did; begin
C
have; begun
D
had; begun
推荐题目
By the end of last month, I _____ all the CDs of Justin Bieber.
#42234
A
collect
B
collected
C
have collected
D
had collected
—Tom, What did you do last Sunday morning ?— I _______ my grandma with my parents .
#36589
A
visited
B
visit
C
will visit
D
have visited
The second season of A Bite of China ________ for a month. It turns out to be the most popular documentary.
#36273
A
began
B
has begun
C
has been on
D
had begun
When I got home last night, my parents ____ for me at the table.
#37020
A
wait
B
waited
C
were waiting
D
have waited