The scientists were trying to look for all possible _______ as to where this species came from.
#5295
A
signals
B
marks
C
clues
D
spots
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The dentist gave me a shot which took ________ almost immediately and I didn't feel a thing.
#5089
A
offense
B
charge
C
action
D
effect
—You are always full of ____. Can you tell me the secret? —Taking plenty of exercise every day.
#7002
A
power
B
strength
C
force
D
energy