I. Trả lời câu hỏi
1. How did the bicycles go down the slope?
2. Why didn't Tom and Fred use the brakes?
3. Where did the bicycles crash?
4. How were Tom and Fred after the crash?
5. Who brought Tom and Fred home?
II. Hoàn thành câu
1. Traffic jam / one / most common / issue / big city / world //.
2. There / many / people / use / road / and / one / main reason / cause / traffic jam //.
I.
1) They went down the slope at great speed.
2) Because they were going very fast and it was too dangerous to use the brakes.
3) The bicycles crashed into a fence and a tree.
4)They were in great pain.
5) Their parents did.
II .
1) Traffic jam is one of the most common issues in big cities around the world.
2) There are too many people using the road and it is one of the main reasons causing traffic jams.
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