Nelson Mandela

  a. the importance   b. the important  
  c. the importance of which  d. the importance of it
4. i met a group of foreigners yesterday,___ were from america.
  a. whom     b. several of whom    c. several       d. several of them
5. the journey around the world took the old sailor nine months, ___ the sailing time was 226 days.
  a. of which   b. during which       c. from which    d. for which
6. the factory produces half a million pairs of shoes every year, 80% ___ are sold abroad.
  a. of which   b. which of           c. of them        d. of that
7. american women usually identify their best friends as someone ___ they can talk frequently.
  a. to who   b. with whom         c. of whom       d. about whom
8. the world ____ is made up of matter.
  a. in that we live     b. on which we live  c. where we live in   d. we live in
9. the man ___ had little information,
  a. i spoke of     b. of who i spoke      c. i spoke of whom    d. whom i spoke
10. i was stuck by the limited use ___ their natural resources.
  a. the indians made of            b. which the indians made
  c. for the indians to make of       d. for the indians making of
11. his house, for _______he paid $10, 000, is now worth $50, 000.
a. that  b. which       c. them  d. it
12. ashdown forest, through ____ we’ll be driving, isn’t a forest any longer.
a. which  b. it           c. them  d. that
13. george, with ____i played tennis on sundays, was a warm-hearted person.
a. that  b. whom        c. him     d them
14. her sons, both of ____ work abroad, will come back home this summer.
a. that  b. who          c. whom d. them 
15. i met the fruit-pickers, several of ___ were still university students.
a. that  b. whom         c. them   d. who