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Spend your time just on the things you find _____ .

A. to be worth doing                     B. worth being done                        C. being worth being done                D. them woth doing

Spend your time just on the things you find _____.        
   A. to be worth doing      B. worth being done   
C. being worth your while      D. them worth doing     

4. Spend your time just on the things you find _______.

A.being worth your while               B.them worth doing

C. worth being done                     D. to be worth doing

Spend your time just on the things you find _______.

A.being worth your while　 　 B.them worth doing

C. worth being done　　　 　　 D. to be worth doing