People are using more and more natural gas, wind and other forms of _____.
#6081
A
energy
B
force
C
power
D
strength
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The members of the club wouldn't run a ____ entrusting（委托） the organization to an unreliable person.
#6809
A
danger
B
risk
C
hazard
D
chance
Opinions of that kind are best kept to yourself, and not voice＿＿＿＿＿．
#7202
A
by public
B
in public
C
in a public
D
in the public