He gave me many pieces of advice
He gave me a lot of advice
It was such a difficult exam that my classmates failed
The exam questions were too difficult for my classmates to answer
Life in the city differs from life in the country
There is a difference between life in the city and life in the country
I’d rather practise sports.
I’d prefer to practise sports.
Cairo is a noisy city.
Cairo is one of the noisiest cities.
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