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Even Tony’s granddaughter，a five-year-old girl，asked him__________ smoking．
#49266
A
give up
B
gave up
C
to give up
D
giving up
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Remember       off the lights when you leave the classroom.
#49459
A
turn
B
to turn
C
turning
D
turned
I find it impossible for me _______ my old friends. This often makes me _____ sad.
#48745
A
meet; to feel
B
to meet; feel
C
meeting; feeling
D
met; felt
—Why did you plant so many trees? — ______ the environment.
#49943
A
Improve
B
To Improve
C
Improved
D
Improving
The girl devoted all her time she had ______ others.  
#50354
A
to helping
B
helping
C
to help
D
helped
It’s the best way         English.
#49072
A
learn
B
to learn
C
learning
D
to learning