My brother has been teaching ________ he was 21 years old.
#55820
A
when
B
if
C
for
D
since
推荐题目
Grace Brown __________ play tennis every day.
#58071
A
isn‘t
B
don’t
C
aren’t
D
doesn’t.
—______ does your mother go for a walk? —Every afternoon.
#56080
A
How long
B
How often
C
How much
D
How many