1 If you want to keep fit, you should take more exercises
2 Unless we get help, we can't do the job
3 You should not do that
4 The sounds from a vacuum cleaner can lead to permanent hearing loss
5 Mai's team performed less successfully than Lan's team
6 Cars go less slowly than motorbikes
7 A new bridge was built by the builders
8 Your house isn't as tall as my house
9 I like to listen/listening to music
10 The white dress is cheaper than the black one
11 We used to use oil lamp
12 Mary is the most intelligent in my group
#hoctotnhe