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A．when B．and

C．unless D．because

A. Yes, it isn’t. B. Yes, this is.

C. No, it isn’t. D. No, it is.

A. not to leave; because B. not leave ; because

C. not leave ; because of D. not to leave; because of

A. Attend a party. B. Do the homework. C. Take a math exam.

— Sure. He will come back as soon as he the classroom.

A. will come; finishes cleaning B. comes; will finish cleaning

C. will come; will finish to clean

---The ____trip was so _____ that we felt very tired.

A. three-hour, bored B. three-hours , bored

C. three-hour, boring D. three-hours, boring

A. Thank you B. Good luck

C. Cheer up D. No problem

A.to，too B．too，to

C．to，to D．too，too

—_______ 625-7886.

A. It’s B. I’m

C. She’s D. He’s

A. has B. is going to be

C. will have D. is going to have