18. She is looking _______ a new place to live because she does not want to depend _______ her
parents any more.
a. for / on b. after / with c. up / forward d. at / into
19. I was brought _______ in the countryside by my aunt after my parents had pass _______.
a. on / over b. for / on c. on / off d. up / away
20. Due to industrialization, we have to cope _______ the fact that many species are _______
danger _______ extinction.
a. over / at / for b. at / upon / over c. for / on / with d. with / in / of