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IV. Correct a mistake
1. My brother will tell you the truth when he will come back from Shanghai in a few days.
2. Brunei is one of the smallest but rich countries in Southeast Asia as well as in the world.
3. Everyone was exciting when the match between Vietnam and Thailand began.
4. I have the bad toothache, so I must make an appoinment with the dentist to have a checkup.
5. While the grasshoper was singing and enjoyed music, the ants were busy storing up food for winter.
6. Not many people can explain the original of the customs and traditions at Tet.
7. When eating in India, you always should use the right hand. Never use the left hand.
8. The doctor gave her a thorough examination so that he can identify the causes of her illness.
9. She is thinking of taking part in either planting trees and helping the street children.
10. Mercury is too close to the Sun that it is usually invisible in the glare of the Sun's rays.