—Are these doctors and nurses tired, Mr. Smith? —Yes. ________. They have been operating on the patient for at least 10 hours. 
#2193
A
They’re exhausted!
B
You must be joking!
C
I’m not surprised!
D
They are really tired of it!
推荐题目
—Tony said he could fix my bicycle,but I really doubt it.—_______.He’s very good at this sort of thing.
#3867
A
Don’t worry
B
I couldn’t agree more
C
Of course
D
A piece of cake
-Are you sure you can do well in today’s test?-_____________  I’ve got everything ready. 
#22095
A
I’m afraid not.
B
I think so.
C
I hope not.
D
It’s hard to say.
-How often does he write emails to his friend?-______.
#24536
A
Once a month
B
In a week
C
For half an hour
D
Last Monday
--- May I open the window to let in some fresh air?---- ______.
#2005
A
Go ahead
B
Take care
C
Come on
D
Hold on