He's been collecting stamps _             he was eight years old.
#40237
A
when
B
while
C
and
D
since
推荐题目
She says the milk_______ her health.
#43665
A
is good to
B
is good
C
is good for
D
is well for
—______ is the bridge over there? —It's about 480 meters long.
#38717
A
How long
B
How soon
C
How many
D
How much