28、In 1778,  Joseph Banks was elected ______ president of the Royal Society , ______ position he held for 42 years．

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

27、Sometimes advertisements make _______ possible for companies to sell the customers ______ money cannot buy．

A．/; that                    B．it; what                  C．that; which             D．/; whose

25、The Chinese people will enjoy _________ longer time for holiday. But making good use of __________ time is not easy for most of them.

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

24、Not until he failed in the examination _______ Cliff ______ the importance of careful preparation.

A．had; realized     B．did; realize C．was; realized    D．has; realized

23、Now that you’ve got so far with the work, you _________ finish it as well.

A．should                        B．have to                C．must                   D．might

22、Most of us like her, ___________ she can be annoying at times.

A．as if         B．even though     C．so long     D．so that

21、Now in our country free medical treatment covers sickness of mind as well as _____ sickness.

A．normal      B．average     C．ordinary    D．regular

19、Johnson ______ for 5 years for political reasons when he was young.

A. was put in prison      B. was in the prison  C. out in prison   D. was in prison