We have been good friends ________ we met.

[　　]

They ________ over five thousand trees by then.

[　　]

Why did you ________ her away from class, Miss Gao?

[　　]

“Have you ________ any medicine before you came to see me?”the doctor asked.

[　　]

He has got a chair to sit ________, but nobody to talk ________.

[　　]

—Did you see the football match last night?

—Yes. I have never seen ________ exciting match before.

[　　]

We found ________ necessary to protect the environment.

[　　]

—Excuse me. May I try on ________ pair of shoes? This one is too small for me.

—Certainly. What size do you want?

[　　]

The boy is ________ young to stay at home by himself.

[　　]

—Mary, Could I ________ your digital camera, please?

—I’m afraid not. I ________ it to Lucy.

[　　]

A．borrow, lend

B．have borrowed, have lent

C．borrow, have lent

D．have borrowed, lend