-Are these library books?   -Yes, ______.
#21765
A
it is
B
they are
C
this is
D
these are
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---Kate, I met two aliens in my garden last night.        ---______
#22025
A
That’s OK.
B
How do you know that?
C
You are kidding!
D
Did you see them?
—I am too tired to walk any farther, Jack. —______, Daniel. You can do it.
#22970
A
No hurry
B
No problem
C
That’s all
D
Come on
—Did you have a good weekend?—_____. We enjoyed ourselves very much in the amusement park.
#22960
A
Of course 
B
Not bad 
C
I'm not sure 
D
I hope so