You used to be quiet, ________ you? 
#69471
A
used
B
did
C
didn’t
D
aren’t
推荐题目
I really don’t know ______ about it.
#70621
A
what to do
B
how to do
C
to do what
D
how can I do
I know it’s also very dry there, _____? 
#69103
A
don’t I
B
isn’t it
C
is it
D
Do I