I don’t know how ________ commas. 
#69179
A
use
B
using
C
used
D
to use
推荐题目
English is very useful ,____it?
#68527
A
doesn’t
B
isn’t
C
can’t
D
won’t
There is little food in the fridge , ______ ?
#70577
A
is it
B
isn’t it
C
isn’t there
D
is there
— Did you go to Nancy's birthday party last night? —Yes. I did.
#70986
A
So did Tim
B
So Tim did
C
Tim did so
D
Tim went so
—Do you think it will be cool tomorrow?— ______. It has been too hot for a week.
#71116
A
So it is
B
I’m afraid so
C
I hope so
D
Of course not