David dislikes television heroes who smoke, __________?
#64444
A
do they
B
don’t they
C
doesn’t he
D
does he
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Better go to see your sick colleague right now, ______ you? 
#64449
A
won’t
B
didn’t
C
don’t
D
hadn’t
—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
---______ have you been in class today?     ---For two hours.
#59891
A
How often
B
How long
C
How many
D
How soon