Câu hỏi:

Choose the best answer A, B, C or D to complete the sentences.

A ………. is an enormous system of stars in outer space.

Choose the best answer A, B, C or D to complete the sentences.

The plants which ................ in the living room need a lot of water.

Choose the best answer A, B, C or D to complete the sentences.

Mukai Chiaki, the first female Japanese astronaut, ……….. 15 days aboard the space shuttle Columbia in space before it …….. to the Earth on July 23,1994.

Choose the best answer A, B, C or D to complete the sentences.

That’s the doctor for ................ Cliff works.

Choose the best answer A, B, C or D to complete the sentences.

Aircraft flying in …….. arcs create microgravity for tests and simulations that last 20-25seconds.

Choose the best answer A, B, C or D to complete the sentences.

Do you know the reason ……. humans are interested in Mars and other planets in thesolar system?

Choose the best answer A, B, C or D to complete the sentences.

He’s so brilliant and he can do anything - ……….