You ____ him . He will come to realize it some day .

A . needn''t punish B . should have punished C . needn''t have punished D . wouldn''t punish

— I stayed at a hotel while in New York .

— Oh , did you ? You ____ with Barbara .

— A . could have stayed B . could stay C . would stay D . must have stayed

Li Ling was a diligent boy . He ____ go to school though it was raining hard .

A . was able to B . could C . couldn''t D . wasn''t able to

— ____ I go out to play now , Mum ?

— No , you ____ .

A . May ; shouldn''t B . Can ; needn''t C . Must ; can''t D . May ; mustn''t

Some White House staff were ______ that the president was no longer in control.

A. talking      B. whispering       C. speaking          D. telling

—How many people are still leading ____ life under ___ poverty line in the world?

   —Perhaps one fourth.

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

As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel. 

A. primary      B. alternative       C. instant          D. unique 

 It is re ported that the United States uses _____ energy as the whole of Europe.     

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

Short skirts ______a few years ago, but they have come back again.

A. went out           B. came out          C. gave out           D. let out

 We finally bought several books by Shakespeare, ______ is one.

A. which of them        B. which of whose     C. of which this      D. and of them