He's been collecting stamps _             he was eight years old.
#40237
A
when
B
while
C
and
D
since
推荐题目
——_____________ does she weigh?     ——Her ______________ is 50kg.
#43612
A
How heavy; weigh
B
How many; weight
C
How much; weight
D
How much; weigh
 I had my lunch half an hour ago. I’m not _____ hungry.
#40838
A
a little
B
little
C
a bit
D
a bit of
—Where is your uncle?—He _____ to South Africa on business. He has ______ there twice.
#42967
A
has been; gone
B
has gone; been
C
went; gone
D
will go; been