---Is your father a teacher? ---well, he _______.
#70684
A
used to
B
was used to
C
used to be
D
is used to be
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There isn’t going to be any pollution in the future, _________?
#69657
A
be there
B
be not there
C
is there
D
isn’t there
I don’t think they would believe her, _________?
#68725
A
do I
B
would they
C
wouldn’t they
D
should I
— You have never seen the dinosaur eggs, have you?—________. How I wish to visit the Dinosaur World.
#69514
A
Yes, I have
B
No, I haven’t
C
Yes, I haven’t
D
No, I have
__ is really hard __ them to climb Mount Tai. 
#69186
A
This, to
B
It, to
C
This, for
D
It, for