_______ a book in the library, enter a key word into the computer.
#52955
A
To finding
B
Finding
C
Find
D
To find
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Fire is dangerous and we must __________ children away _________ it.
#55018
A
stop; from
B
keep; from
C
prevent; to
D
keep; to
The president _____ all people _____ our environment. 
#54151
A
urge, protect
B
urged, to protect
C
urges, protect
D
urged, protect