Ex 6. Find and correct the mistake in each sentence.
1. We can save the electricity by turn off the lights when not using them. .........
A B C D
2. Everyday I go to work by foot, but she goes to work by bus. .............
A B C D
3. Will we traveling in driverless and high-speed cars in the future? .........
A B C D
4. Your uncle works in Ha Noi for one year then moved to Da Nang, didn’t he?
A B C D