Mấy bài này có đáp án rồi mình cần giải thích vì sao lại như vậy 1. A train leaves for Lao Ca at 5 o'clock every morning. (THERE) _________________ Đáp án:There is a train leaving for Lao Cai at 5 o'clock every morning. 2. The distance from Ho Chi Minh City to Phu Quoc Island is about 300 km.(IT) _____________________ Đáp án:It is about 300 km from Ho Chi Minh City to Phu Quoc Island. 3. Is it possible to travel to Sa Pa by air?(CAN) ________________ Đáp án:Can you travel to Sa Pa by air? 4. Be careful or you'll fall off your bicycle.(IF) _______________ Đáp án:If you are not careful, you'll fall off your bicycle. 5. Our teacher is always a careful driver.(DRIVERS) __________________________________________________ Đáp án:Our teacher always drives carefully. 6. Mr Tam went to work by car some years ago, but now he cycles.(USED) ________________ Đáp án:Mr Tam used to go to work by car some years ago, but now he cycles. 7. Road users should obey traffic rules strictly.(OBEYED) ________________ Đáp án:Traffic rules should be obeyed strictly (by road users). 8. My mother washed clothes by hand in the past, but she no longer does it now.(USED) ___________________ Đáp án:My mother used to wash clothes by hand