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I always look _____ those who never look _____ others, even though they have achieved great achievements. 

    A. down on; up to             B. down upon; up to 

C. forward to; down on         D. up to; down on

 Most young people don’t want _____ the kind of life that their parents ______.

    A. to lead; used to live           B.  living; used to live 

C. to live; used to living          D. leading; used to live

Do you still remember the key points that _______ in his report? I don’t remember them all.

    A. referred to   B. were referred     C. he was referred to  D. were referred to

-- How did you manage to get such a nice old painting?

  ---Quite _______.

    A. by accidents    B. by a chance   C. by accident   D. by incident

With the improvement of people’s living conditions, most mothers _______ in hospitals.

A. have delivered their babies       B. have born their babies 

C. have their babies born           D. have their babies delivered

 The book, which _______ children, became popular with adults.

A. was planned for           B. was meant by   

C. was intended for          D. was designed by

Whatever happens, they are determined to ______ the struggle to the end.

    A. carry on    B.  go on     C. continue on     D. insist on

. You should ________ these bad habits.

A. get yourself rid of                 B. rid yourself of  

C. get rid of yourself with             D. rid of yourself with

 I would rather you _______me the truth; then what has happened would not have happened.

A. to tell      B. tell     C. told     D. had told

 Operation rooms should be kept free ______ bacteria of any kind.

A. with       B. for         C. from        D. to