31. With a smart watch, you will…………. your friends in other countries.
A. speak B. talk C. say D. contact
32. Robots will help us do the housework such as____ the floors, ……… meals and so on.
A. clean - cook B. to clean - to cook C. cleaning – cooking D. cleaning - to cook
33. He hopes he will reduce the monthly cost of gas when he uses_____ energy for cooking foods or heating water.
A. warm B. solar C. sunlight D. hot
34. 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.
A. ship B. motorhome C lantern D. UFO
35. He's living in a_____ on a large river. It's very convenient for him to catch fish every day.
A. palace B. airplane C. houseboat D. flat
36. There are a lot of__ _____in her big city. I can't count how many floors there are.
A. skyscrapers B. spaces C. programmes D. tractors
37. She can keep vegetables and fruits fresh in her______ during a long time.
A. helicopter B. modern fridge C. electric cooker D. spaceship