Teachers will hardly use chalk in the future, ______?     
#68855
A
will he
B
won’t he
C
will they
D
won’t they
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E-mail is very popular today.  People seldom write letters now,_______?
#69806
A
did they
B
do they
C
didn't they
D
don't they
I don’t know how ________ commas. 
#69179
A
use
B
using
C
used
D
to use
She’s read the  book, _____?
#69621
A
isn’t she
B
doesn’t she
C
hasn’t she
D
wasn’t she