During the examinations we are supposed to remain in our seats, fix our eyes on the papers, ________ anyone.

 A. instead of speaking to                     B. and not to speak to

  C. rather than speak                             D. but shouldn't speak to

________ along the quiet road at forty miles an hour, and then an old man suddenly started to cross the road in front of me.

A. Driving                      B. I was driving            C. When I was driving   D. Having driven

Computers are playing an important role in our daily life and _____ is hard to find a field where computers aren’t being used.

    A. as              B. which            C. it               D. this

At last we arrived at what we called Stone Forest and          up our tents．

   A．set                        B．setting                 C．had set                D．has set

____________, and you will succeed.

       A．Making more efforts                            B．More efforts

       C．To make more efforts                          D．If you make more efforts