He's been collecting stamps _             he was eight years old.
#40237
A
when
B
while
C
and
D
since
推荐题目
Some ______are ______their time to help the old people.
#39614
A
volunteer; volunteer
B
volunteers; volunteering
C
volunteering; volunteers
D
volunteers; volunteers
The new teacher is quite ____ Mr Wang. I like her better.
#43358
A
different from
B
the same as
C
difference
D
the same to