I don’t know how ________ commas. 
#69179
A
use
B
using
C
used
D
to use
推荐题目
— When I was young, I liked playing with toy animals. — ______. 
#70950
A
So I was
B
So was I
C
So did I
D
So I did
--- Is Mr black really ill?---_________. He’s in hospital. 
#70066
A
I hope so
B
No. he isn’t
C
I’m afraid so
D
He is OK
---There was hardly anything left after the earthquake, ______? ---______. People had to rebuild their houses.
#69228
A
wasn’t there; Yes
B
was there; No
C
wasn’t there; No
D
was there; Yes