Everyone should learn something about first aid,for every second will ________ in an emergency.
#11067
A
play
B
count
C
happen
D
show
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Do you know how much that _____?
#12803
A
adds
B
adds up
C
adds to
D
adds up to
We allow     in the woods but anyone is forbidden      here.
#13424
A
to camp; to smoke
B
camping; smoking
C
to camp; smoking
D
camping; to smoke