Are those your pen friends?    Yes,              .
#60136
A
they are
B
they’re
C
they are not
D
they
推荐题目
He has to finish the experiment today. He must be in the lab, ______?
#64772
A
mustn’t he
B
won’t he
C
doesn’t he
D
isn’t he
_______her boyfriend is?
#64871
A
What do you think
B
Do you think what
C
What you think
D
What you think
 It must be he that has stolen Mr. Smith’s purse, _____?
#65383
A
hasn’t he
B
isn’t he
C
mustn’t it
D
isn’t it