The illness from which Mary is suffering has now been _____ as hepatitis (肝炎).

   A. diagnosed    B. determined    C. deduced   D. discovered

I'm afraid this painting is not by Picasso. It's only a copy and so it's _____.

   A. priceless    B. invaluable    C. unworthy    D. worthless

An early typewriter produced letters quickly and neatly; the typist, _____ couldn't see his work on his machine.

   A. however    B. therefore    C. yet    D. although

The mother felt herself____ cold and her hands trembled as she read the letter from the battlefield.

A.grow  B.grew  C.grown  D.to grow

8. —He _____   to the meeting. Have you informed him of it?

   —Sorry. I   _____ to.

A. hasn’t come; am going

B. didn’t come; have forgotten

C. hasn’t come; forgot

D. doesn’t come; will have

9. I will have begun to do the work ______ 3 o’clock this afternoon.

A. by  B. at  C. after  D. before

9. — Why do you want the book so much?

    — ____, sir.

 A. Studying   B. Studied 

C. Studies    D. To study

10. — Shall I go and buy two more bottles of beer?

— No, I’ve already bought twenty. That _____ be enough for us two.

A. can    B. may      C. ought to    D. might

10. —How wise of you to come round, but why?

—_____ that all is right.

A. See       B. To see   

C. Seeing    D. For seeing

9. Yang Liwei spent the whole evening talking about the things and persons ________ none of us has ever heard of in CCTV station.

A. which  B. who  C. whom  D. that