---______ do you exercise? ---Once a week.
#60191
A
How long
B
How often
C
How many
D
How old
推荐题目
 This event was rather unusual, ________?
#65077
A
is it
B
isn’t it
C
was it
D
wasn’t it
—Didn't the robot have a rest?—_______. Because it never gets tired.
#59733
A
Yes, it did
B
No, it didn't
C
Yes, it had
D
No, it hadn’t
—Is your name Kitty?  —_________.
#59768
A
Yes, I am
B
Yes, I’m
C
Yes, you are
D
Yes, it is
——Bill had nothing for breakfast this morning ,       ?.——    , he got up too late.
#60038
A
didn’t he ; No
B
did he ; No
C
hadn’t he ;Yes
D
Had he ;Yes