(a) to play (b) to eat (c) to sing (d) to make
(a) to eat (b) to play (c) to make (d) to talk
(a) to eat (b) to run (c) to sing (d) to cook
(a) to talk (b) to watch (c) to sing (d) to jump
(a) to sleep (b) to watch (c) to make (d) to dance
(a) to cook (b) to drink (c) to work (d) to walk
(a) to go (b) to make (c) to cook (d) to talk
(a) to sleep (b) to read (c) to cook (d) to meet
(a) to look (b) to cook (c) to sleep (d) to talk
(a) to sing (b) to walk (c) to sleep (d) to work
Answer Keys:
(31) A; (32) A; (33) C; (34) B; (35) D; (36) B; (37) A; (38) D; (39) D; (40) C