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－Is that girl Kate?

－Yes, ________．

A．you’re right

B．that's all right

C．he is

－Excuse me．Is the library open all day?

－_________．Only from 8 a. m. to 4 p. m.．

A．Yes, of course

B．That's right

C．Sorry, I'm not sure

D．Sorry, I'm afraid not

－Could you please do me a favor?

－________

A．That's all right．

B．No, I'm not．

C．Yes, they will．

D．Sure, What is it?