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—I have never been to the Great wall. —If you have an opportunity _______ there, you must take it.
#48916
A
to go
B
to going
C
going
D
go
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I think it’s important ______ healthy.               
#50995
A
keep
B
keeping
C
keeps
D
to keep
It’s important __________ fire.
#50876
A
to care
B
be careful
C
to be careful
D
to be careful with
I enjoy _____the western food and I often make some for my parents.
#49372
A
cook
B
cooking
C
cooks
D
to cook
I think the room is too small for us ________ .
#48823
A
to live
B
living in
C
to live in
D
live in
 —         did you tell her about the news?— By         an e-mail.
#49819
A
What ; sending
B
How ; sending
C
What ; send
D
How ; send