______ the chairman of the council, the vice chairman does duty for him.

A. Absent from        B. In the absence of      C. Present from     D. In the presence of

 In the competition to be held, a gold medal, together with a certain sum of money, _____ the champion.

A.   will be given to who will win               B.  will be given to whoever will become

C.   has been given to whoever wins             D.  was given to anyone who became    

 You can only be sure of _____ you have at present; you cannot be sure of something _____ you might get in the future.  

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

 The traditional view is _____ we sleep because our brain is “programmed” to make us do so.  

A. when                B. why                         C. whether            D. that

 We arranged to meet at the cinema at 7:30, but he failed to ______.  

A. turn up             B. turn on                     C. turn out             D. turn over

 Miss Green contributed fifty dollars, but she wished she could contribute _____.

A. one other fifty dollars                                   B. the same amount also      

C. more fifty dollars                                  D. another fifty            

 When _____ different cultures, we often pay attention only to the differences without noticing the similarities.

A. compared          B. being compared         C. comparing         D. having compared  

 Hundreds of species are declared to _____ in the coming century.

A. die away           B. die out               C. die down           D. die off     

 It was playing computer games ____ cost the boy plenty of time ____ he ought to have spent doing his lessons.

A. what; that         B. that; when         C. which; that               D. that; that   

 We _____ live in a small flat but last year we bought a house.

A. would               B. had to               C. used to                    D. ought to