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—Why did you plant so many trees? — ______ the environment.
#49943
A
Improve
B
To Improve
C
Improved
D
Improving
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How amazing it was _________ the 2012 Shanghai F1 Race!
#48633
A
watch
B
watches
C
to watch
D
watching
Running in the morning can make me  ________ relaxed .
#50248
A
felt
B
to feel
C
feel
D
Feeling
 — Would you mind               here?  —I'm sorry about that. I'll go somewhere else.
#48788
A
not to smoke
B
not smoking
C
no smoke
D
not smoke
It was difficult for the rich _____ a happy life.
#48476
A
to have
B
having
C
had
D
have
 The students were all tired, but ________of them stopped ____________ a rest.
#50654
A
no one; to have
B
none; having
C
none; to have
D
no one; having