There was an explosion in London but up to now nobody has ______ responsibility for it.

       A. declared            B. announced         C. claimed             D. required

 Each year 1 million smokers quit, but only 3 to 5 per cent ____ stay off cigarettes for a year or more.

       A. succeed in  B. manage to          C. stick to             D. keep on

They can’t____ the charms of “Internet literature”, which others may look down upon as fast food culture.

A.advocate            B.resist                  C.stand               D.react

Fresh air, enough exercise and nutritious food _______ to sound health.

   A. appeal          B. contribute          C. add                   D. distribute

_____ different life today is from _____it  was ten years ago!

    A. What a, what                          B. How, what

    C. What, which                           D. What a, that

Will _____ to start work tomorrow?

   A. it be convenient of you         B. it be convenient for you

   C. you be convenient               D. you be of convenience

You don’t feel the weight of air ____ against your body because the pressure it produces on one side of you is balanced by the pressure on the opposite side.

       A. having pressed                               B. being pressed

       C. pressing                                        D. having been pressed

When we human beings are excitedly celebrating the millennium, the history is sneering,“One thousand years____nothing to me.”

       A.is                       B.are              C.have been           D.was

____ in history when remarkable progress was made in relatively short period of time.

A.Moments                              B.Throughout moments

C.Moments have been               D.There have been moments

It is the people____are devoted to making the country clean and tidy____Singapore should be proud of.

       A.who,which         B.which,that   C.which,who         D.who,that