A study shows that walking fast in your old age is a ______ that you will live a long life.
#6091
A
sign
B
mark
C
symbol
D
signal
推荐题目
A dark cloud is a _______of rain.
#6665
A
sign
B
signing
C
mark
D
signature
 He is _______as a leader but he hasn’t ________in teaching.
#7038
A
success; many experiences
B
a success; much experience
C
great success; an experience
D
a great success; a lot of experiences