—What made the teacher so angry?

    —_________ late again.

    A. Tom’s being                       B. Because Tom was

    C. Tom was                          D. Tom being

The research is so designed that once _______ nothing can be done to change it.

A. begins                     B. having begun         C. beginning                         D. begun

—You were out when I dropped in at your house.

—Oh, I          for a friend from England at the airport.

       A．was waiting            B．had waited           C．am waiting          D．have waited

Scientists have made a great          in the treatment of cancer.

       A．principle                 B．breakthrough       C．conclusion           D．introduction

What _______ it is to jump into cool water to swim in such hot weather.

   A. fun              B. a fun             C. funny            D. funs

 You have to be patient with women. It will be a long time before they ________ dressing themselves up.

     A. finish                         B. finished                   B. will finish             D. had finished

He had important things to do. Otherwise,  he ________ our party yesterday.

     A. would take part in                                         B. should take part in   

     C. must have taken part in                                  D. would have taken part in

     We appreciate very much that you have come to visit our city ________ the long and tiring journey.

     A. in honor of    B. in search of                       C. in view of              D. in spite of

 China won 100 medals in the Beijing Olympic Games, which are almost ________ those of the Sydney Olympic Games.

A. twice as many as                                B. as many as twice              C. as much as twice  D. twice as much as

What is it ________ makes him a reliable man?

     A. what                          B. that                         C. which                     D. how