It isn't necessary to finish the work today
→You don't..have to finish the work today
2. It isn't necessary for her to cut all flowers today
→She doesn't.have to..cut all flowers today
3. It isn't necessary for Nam to do all the choers today
→ Nam doesn't..have to do all the choers today
4. It wasn't necessary for him to remind me about it
→He didn't...have to remind me about it
5. It wasn't necessary for you to finish it
→ You didn't...have to finish it...
6. You don't need to wash my car today
→ It isn't..necessary for you to wash car today
7. She doesn't need to help me today →It isn't neccessary for her to help me today
8. You need to finish this work today → It is necessary for you to finish this work today
9. He needs to stay at home now →It is necessary for him to stay at home now
10. It is necessary for us to study hadr now
→We need.to study hard now