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.