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____ we have finished the course, we shall start doing more revision work.

A. For                    B. Now that          D. By now            D. Until

Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.

A. has just left B. had just left  C. just left     D. was just leaving

—I’m leaving on April 30.

—So why not come to spend ________ days with me?

A. all these last few          B. these all last few          C. these last all few          D. all last these few

—How do you deal with the disagreement between the company and the customers?

—The key _______ the problem is to meet the demand _______ by the customers.

A. to solving, making                                    B. to solving, made

C. to solve, making                              D. to solve, made

The student, if well _____ , will pass the examination without much difficulty.

   A. preparing        B. prepared        C. to prepare       D. ready

Start out right away, _____you’ll miss the first train.

A. and      B. but      C. or      D.while

—What do you think made Mary so upset?

—_______ her new bike.

A. As she lost        B. Lost                           C. Losing           D. Because of losing

We agreed _______ here but so far she hasn’t turned up yet.

A. having met  B. meeting                 C. to meet        D. to have met

Electricity, like other forms of ______, has greatly increased in price in recent years.

A. pressure      B. force      C. strength      D. energy

The factory was built in a secret place, around ______ high mountains.

A. which was   B. it was   C. which were    D. them were