---Mary dances best in our school.---I agree. I’ll never forget ______ her dance for the first time.
#48560
A
seeing
B
to see
C
see
D
seen
推荐题目
He devoted as much time as he could _________ on the plan.
#48907
A
working
B
to work
C
worked
D
to working
---I often chat with my friends on the Internet.---You are so smart! Will you please tell me ________?
#49449
A
how to do
B
how to do it
C
how to use
D
when can I use it
—Why did you plant so many trees? — ______ the environment.
#49943
A
Improve
B
To Improve
C
Improved
D
Improving