Bill was doing a lot of physical exercise to build up his __________.
#5957
A
ability
B
force
C
strength
D
mind
推荐题目
Have you made out your ______ for a passport?
#7059
A
appointment
B
application
C
apposition
D
appreciation
 They were trying to remove harmful ______ from cigarettes.
#6937
A
content
B
substances
C
materials
D
mixtures