Question

Type the correct form of the word in parentheses to complete each
sentence.

1. The spacecraft is still ____________________ (send) messages back to Earth.
2. Halley’s Comet ____________________ (appear) every seventy-

ive years.
3. Space colonies ____________________ (become) common in the future.
4. Scientists used to ____________________ (think) Pluto was a planet, but they don’t anymore.
5. Galileo ____________________ (discover) the moons of Jupiter in 1610.

Answer 1

Type the correct form of the word in parentheses to complete each
sentence.

1. sent
2. appears
3. will become
4. think
5. discovered.