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
推荐题目
 Tony often goes to the park, _____?
#69551
A
does he
B
doesn’t he
C
does Tony
D
doesn’t Tony
His MP5 is very useful,      ?
#70938
A
isn’t it
B
is it
C
does it
D
doesn’t it