-Are these library books?   -Yes, ______.
#21765
A
it is
B
they are
C
this is
D
these are
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—This is my treat and next is yours. How's that?—OK.         .
#1617
A
It doesn't matter
B
It depends
C
No way
D
It's a deal
—I'm going to travel along the Mekong River next week.—______________.
#2489
A
Have fun
B
Take care
C
Best wishes
D
Write to me.
--- Do you know the big news that Joan will marry Frank soon?--- Marry Frank? _________ She told me she would keep single.
#2837
A
You can’t be serious.
B
Good for you.
C
It doesn’t make sense.
D
I can’t agree with you more.
—What about going for a walk?—______.
#1771
A
Go ahead, please
B
Me, too
C
Help yourself
D
Good idea