36. The students _________ in the library.
a) study
b) studies
c) studying
d) studied
Answer: a) study
37. He _________ his car at the gas station.
a) fills
b) fill
c) filling
d) filled
Answer: a) fills
38. The bird _________ in the cage.
a) sings
b) sing
c) singing
d) sang
Answer: a) sings
39. They _________ their lunch every day.
a) eat
b) eats
c) eating
d) ate
Answer: a) eat
40. She _________ the news on the radio every morning.
a) hears
b) hear
c) hearing
d) heard
Answer: a) hears
