To live a green life, we try ____ more energy and produce less pollution.
A. to save
B. save
C. saves
D. saved
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We're looking forward to____ during the winter holiday.
A. going camping
B. go camping
C. going camp
D. went camping
You don’t look well. Why ___to see the doctor?
A. not to go
B. you not to go
C. not go
D. didn’t go
The old man moved here to live with his son five years ago, and he_____ the life here.
A. used to
B. isn't used to
C. is used to
D. used not to
It’s very kind ___ you ___us so much help.
A. of…to give
B. for…to give
C. to…giving
D. with…to giving
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