V.
27. It is about 300 km from Ho Chi Minh city to Phu Quoc Island.
28. Traffic rules should be obeyed strictly by road users.
29. If you are careful, you won't hurt yourself.
VI,
30. They will be learning English this time tomorrow.
31. My brother doesn't like ice - skating because he thinks it is dangerous.
32. People won't use flying cars until year 2050.