-You've given us a wonderful Chinese dinner, Mrs. Wang. -- ______. 
#4253
A
Oh, I'm afraid I didn't cook very well
B
I' m glad you enjoyed it
C
Come again when you are free
D
It's not necessary for you to say so
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—I’m going to Sanya for the summer holiday. —________! 
#21436
A
Have a good time
B
Well done
C
Best wishes to you
D
Thanks a lot
—Bad luck. I scored rather low in the test.  —       . Or you'll have to leave school. 
#731
A
It can't be helped
B
Don't mention it
C
I'll make it up for you
D
You've got to do something