1. Learning English is very useful for Mary
=> It’s ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
2. Doing morning exercises is very good for your health
=> It’s ……………………………………..
3. Playing badminton after work is so relaxing
=> It’s ………………………………..
4. Recycling plastic bottles is necessary to reduce pollution
=> It; s…………………………………..
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