He spent too much time talking on     phone while we were all busy at     work..

   A. the; /       B. a; /       C. / ; /         D. the; the

81. In order to finish the work in time，they always worked far______ the night.

A. in                        B. onto                     C. at                         D. into

61. --- I am not _____ this city. Would you please introduce it to me?

--- With pleasure.

familiar to                    B. familiar in             C. familiar for            D. familiar with

41. During her study in Massachusetts Institute of Technology she has got the degree _____ PhD, and it is a degree ______ chemistry.

A.of; at                        B. in; at                        C. of; in                       D. in; of

21. He is very strict with others, but he is always blind _____ his own shortcomings.

A. for                          B. to                           C. with                         D. In

1. He kept his head _____ water when he began to learn swimming, but he raised his head now and then

A. over                     B. below                    C. above                  D. Up

90. I invited Joe and Linda to dinner, but ______ of them came.             

 A. neither           B. either            C. none           D. Both

70. -Do you like ___ here?

-Oh，yes. The air，the weather，the way of life. Everything is so nice.

 A. this            B. these           C. that             D. it

50. When they met, they stopped and said hello to_______.

A. each other          B. each another         C. the other each D .each one    

.It's the second time you_________late this week.

A.arrive　　　        B.arrived　　　   C.have arrived　　D.had arrived