Câu hỏi:

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

Neil Armstrong is considered as the first person __________ 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

Our lives are in __________ because of pollutions

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

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

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

This water is __________ poisonous that people here can’t drink.

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

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