Growing pains

5. ––– i went to see you at about ten this morning, but you were not in the office.
  ––– oh, that was probably _______ i was talking with the headmaster.
   a. when       b. why     c. what        d. that
6. today’s sichuan has become a representative of the west development, a place _____ hopes and opportunities have replaced poverty and backwardness.
a. which     b. that     c. where     d. there
7. the village has developed a lot ______ we learned farming two years ago.
a. when   b. which  c. that   d. where
8. some pre-school children go to a day care center, ______ they learn simple games and songs.                                                 
a. then     b. there        c. while        d. where
9. today, we’ll discuss a number of cases ______ beginners of english fail to use the language properly. ( 陜西) 
a. which   b. as  c. why   d. where
10. i work in a business _________ almost everyone is waiting for a great chance.
  a. how         b. which         c. where         d. that
11. those successful deaf dancers think that dancing is an activity ______ sight matters more than hearing. ( 天津)
a. when        b. whose         c. which         d. where
12. after graduation she reached a point in her career ______ she needed to decide what to do.                                                          
   a. that       b. what        c. which      d. where