Write the second sentence so that it has a similar meaning to the first one. Use the words in brackets 1. this supermarket isn't as expensive as the one across the street (less)
=>This supermarket is less expensive than the one cross the street
2. you won't pass the exam unless you study harder (if)
=>If you don't study harder, you won't pass the exam
3. hanoi urban districts are noisier than its suruban areas (as)
=>Hanoi uruban areas are not as noisy as Hanoi urban districts
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