13. A. task B. lesson C. journey D. day
12. A. lives B. works C. thinks D. plays
11. A. knocked B. picked C. took D. looked
10. A. wall B. box C. top D. stick
9. A. by B. on C up D. with
8. A. pull B. see C. eat D. reach
7. A. when B. until C. since D. while
6. A. out B. at C. on D. up
5. A. human B. sign C. mother D. animal
4. A. actions B. ideas C. messages D. feelings