Our school had about 20 notebook computers but only one-forth_____used regularly. Now we have 50 working all day long.

A. is           B. are                 C. was      D.were

—May I go now?

— ________ you’ve finished your work, you may go.

A. After          B. Although           C. Now that        D. As soon as

Most of his great novels and plays were not published or known to the public ________ his tragic death in 1786.

A. even before     B. ever since     C. until after    D. until before

______that all mountain roads were closed.

A. So became the dangerous weather         B. So dangerous did the weather become

C. So dangerous became the weather        D. Dangerous the weather became so   

She was greatly shocked at the scene before her eyes. Never did she expect that local conditions ____be so awful.

A．could           B．should             C．would            D．might

______is known to us, he is the top student of our class.

A. It      B. As        C. This      D. That

Oil ______ 90 per cent of the country's exports.

A) consists of          B) reaches          C) accounts for        D) composes

He was informed that it was ______who wanted the interview.

A. I                B. me             C. myself           D. mine

—Do you like Nack ?

—Yes , Nack is good , kind , hard –working and intelligent;        , I can’t speak too highly of him .

   A. as a result              B．in a word            C. by the way           D．on the contrary

—How did you find your visit to Disneyland?

—I enjoyed it very much. It was _____ than I had expected.

   A. far more interested   B. far more interesting   C. so interesting   D. even more interested