Rewrite the sentences using the modals cou / d_{s} must, ought to, can't, needn't.
1)It's not necessary for you to join the charity - you can still make a donation.
You
2)I'm sure he isn't at school today - he has an appointment with the doctor.
He
3)It's a good idea to get plenty of sleep the night before an exam.
You
4) She was able to read when she was four years old.
She
5) We are obliged to help people in need - it's our duty.
We
1)It's not necessary for you to join the charity - you can still make a donation.
You
2)I'm sure he isn't at school today - he has an appointment with the doctor.
He
3)It's a good idea to get plenty of sleep the night before an exam.
You
4) She was able to read when she was four years old.
She
5) We are obliged to help people in need - it's our duty.
We
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Ответ:
2.He can't be at school today - he has an appointment with the doctor.
3.You ought to get plenty of sleep the night before an exam.
4.She could read when she was four years old.
5.We must help people in need - it's our duty.