18.
which word best completes the sentence?

jamaal and are exercising.

i
me

19. which sentence has the correct subject-verb agreement?

heavy rains or fast-melting snow causes floods in many parts of the world.
heavy rains or fast-melting snow cause floods in many parts of the world.

20. which sentence has the correct subject-verb agreement?

lightning bolts flash across the sky.
lightning bolts flashes across the sky.