He hopes he will reduce the montly cost of gas when he uses _______ energy for cooking foods or heating water.

• warm

• solar

• sunlight

• hot

He believes that he saw a ______ flying in the sky last night. He was scared that the aliens would appear and take him out of the earth

• ship

• house car

• lantern

• UFO

 He’s living in a ______ on a large river. It’s very convenient for him to catch fish every day.

• palace

• airplane

• houseboat

• apartment

There are a lot of ______ in her big city. I can’t count how many floors there are.

• skyscrapers

• spaces

• programmes

• tractors

She can keep vegetables and fruits fresh in her ______ during a long time.

• helicopter

• modern fridge

• electric cooker

• spaceship

They’d like to buy a ______ robot because it might help them do the housework of fix appliances.

• industry

• wireless

• technology

• hi-tech

He can ______ and receive emails quickly with his smart TV.

• send

• put

• catch

• place

He wants to create modern robots, and he expects that they might take care ______ the children at home when their parents go to work

• in

• after

• of

• to

She hopes that she ______ a new smartphone in the near future.

• has

• is having

• will have

•  is going to have

They ______ to the Moon to live although they have many chances. They still like living on the Earth

• do not fly

• will not fly

• aren't going to

• did not fly