一Tell us, Mark ,what is the ____ of the American Civil War?一 Well, is it because the black slaves wanted freedom?
#6280
A
effect
B
cause
C
result
D
reason
推荐题目
All that can be done ____.
#7348
A
has been done
B
have been done
C
have done
D
has done
Many ordinary people fought against _____ in order to create a fairer society.
#5270
A
distribution
B
arrangement
C
insecurity
D
privilege
Smoking, which may be _______ for some people, can cause great ______ to our health.
#6021
A
fun; destroy
B
fun; damage
C
a fun; harm
D
a fun; hurt
Climbing Mount Everest          great skills and        not without risk.
#6097
A
requires;are
B
required;were
C
requires;was
D
requires;is