31. The teacher _________ the students to turn in their assignments.
a) tells
b) tell
c) telling
d) told
Answer: a) tells
32. The cat _________ up the tree.
a) climbs
b) climb
c) climbing
d) climbed
Answer: a) climbs
33. They _________ their friends at the mall.
a) meet
b) meets
c) meeting
d) met
Answer: a) meet
34. The baby _________ up the stairs.
a) crawls
b) crawl
c) crawling
d) crawled
Answer: a) crawls
35. She _________ to music while doing her homework.
a) listens
b) listen
c) listening
d) listened
Answer: a) listens