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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Part of the work is to be finished today and ______ by this weekend.
#7218
A
another
B
the others
C
the rest
D
the other
Bill was doing a lot of physical exercise to build up his _______.
#6373
A
ability
B
force
C
motivation
D
strength
We forgave his bad temper because we knew that his son's illness had put him under great _____.
#7403
A
emotion
B
excitement
C
crisis
D
stress