cоставить 10 предложений с модальным глаголом в настоящем и прошедшем временах (5 вопросительных и 5 утвердительных) об умениях и возможностях

I could swim when I was 6

I have to study chemistry

You should go to see your doctor

May I take your pen?

Could you help me?

I can't do it.

You needn't hurry

He had to come back

They have to work a lot

You must learn it by heart

Shall we wait here?

They ought to tell him the truth as soon as possible.

She might have sent us an e-mail.