—Mom, where is my schoolbag?   —______. Is it under the bed? 
#20064
A
I don’t know
B
Excuse me
C
You’re welcome
D
Here you are
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—Can you come to my party this Saturday, Lucy?  — ______. I’m not in Jinan that day.
#19987
A
Sorry, I can’t
B
Yes, I can.
C
Sure, I’d love to
D
Certainly.
 –Don’t arrive late for class, Tom. --_____________. 
#19989
A
Sorry, I won’t do it again.
B
It doesn’t matter.
C
You’re welcome.
D
The same to you.
 Are these your English books?   .
#20035
A
Yes,they are.
B
Yes,these are.
C
Yes,it is.
D
No,they are.