I:
1) train tickers
2) means of trainsport
3) road user
7) road safety
8) speed limit
9( helmet
II:
-Mr Thanh didn’t use to travel to Korea.
-It is 250 km from Ho Chi Minh City to Da Nang.
-My hometown used to be a small village.
-How was it from Ha Noi to Singapore in he past?
-Lanna used to be on foot to school or by car?
-He used to be a good student, but now he is poor.
III:
1. boring
2. interesting
3. tired
4. boring
5. excited
6. interesting
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