People in China used to keep records by putting a number of stones together, ___?
#65325
A
usedn’t they to
B
did they
C
used to they
D
didn’t they
推荐题目
—_____will your sister be back ?—In about two hours.
#59910
A
How
B
How often
C
How long
D
How soon
 The police were seeking more information to find out ____ the rich merchant. 
#64763
A
who was it that killed
B
who it was that killed
C
it was who killed
D
who was it killed
The news that he fought with his coach surprised us, ________?
#64675
A
did he
B
didn’t it
C
didn’t he
D
did it
—Lucy,        do you go to the park?—Three times a week.
#59963
A
How far
B
How long
C
How often
D
How much