41.A typhoon moves more quickly than a normal storm.
41 A typhoon travels at a higher speed than a normal storm
42 The new computer system works more effectively than the old computer
43 Tuan wants to reduce air pollution, so he planted more trees last week
44 People can't live on Mars because there is no air
45 I think this robot cleans better than me
46 My laptop is not good for playing games, so I want to change it
47 These robots can solve that complicated problem easier than we expect
48 The United States government has records of thousands of UFO sightings
49 My parents decided to use smartphones just for chatting with their friends on Facebook
50 Are there any intelligent beings on other planets in our solar system?
