. Rút gọn rồi so sánh các phân số sau: a) 51/136 ; 60/108 ; 26/156 b) 165/270 ; 91/156 ; 210/1134 chi tiết giúp mình ạ. Hứa vote 5*, cảm ơn đầy đủ

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Exercise 2: Rewrite the sentences using used to 1.My mum lived in a small village when she was a girl. → My mum .................................................................... 2.My parents lived in the USA when they were young. =>My parents ………………………………………… 3.We cycled to school two years ago. → We .......................................................................... 4.There did not use to be many traffic accidents before. → Now there are .......................................................... 5.My uncle was a bus driver some years ago, but now he has a desk job. → My uncle.................................................................. 6.Dennis gave up smoking three years ago. => Dennis…………………………………………….. 7.My brother had his hair cut short when he joined the army. =>My brother ………………………………………… Exercise 3: Choose the best answer: 1. I like coffee ___ I don't like tea. A. and B. but C. so D. because 2. I cannot swim ___ ski. A. so B. but C. or D. because 3. I want a new TV ___ the one I have now is broken. A. and B. but C. so D. because 4. I had to work on Saturday ___ I couldn't go to John's party. A. and B. but C. so D. because 5. My name is Jim ___ I'm your new teacher. A. and B. but C. so D. because 6. We live in the same building ________ we have hardly seen each other A. and B. although C. but D. so 7. I went to buy a Rolling Stones CD ________ the shop didn't have it. A. and B. but C. however D. so