Câu hỏi:

Choose the letter A, B, C or D to complete the sentences

Space __________ is the main vehicle for astronauts to travel on the Moon.

Choose the letter A, B, C or D to complete the sentences

The astronaut wears a __________ to protect him from the dangers of being outside in space.

Choose the letter A, B, C or D to complete the sentences

There have been some traces proving the __________ of aliens.

Choose the letter A, B, C or D to complete the sentences

“What subject do you find the most difficult?” My mother asked.

⇒ My mother asked what subject ____________ the most difficult.

Choose the letter A, B, C or D to complete the sentences

Our lives are in __________ because of pollutions

Choose the letter A, B, C or D to complete the sentences

I’m curious about the __________ space of the Earth.

Choose the letter A, B, C or D to complete the sentences

Scientists claimed that there __________ eight planets in our solar system.