Plurality of modality

We have a lot of work tomorrow. You _______________ be late. 

I looked everywhere for my glasses but I ___________ find them anywhere.

Children ___________ tell lies. It’s very naughty. 

1. _______ you swim when you were 10? 

She doesn`t feel well. ________ she call to the doctor?

I think, James _________ to keep body and soul together next year, when he starts studying.

You __________ do these exercises! They are too difficult for you!

I ________ eat too much cake, or I’ll get fat! 

- Granny, may I eat all these cookies? - Yes, you ____, if you ____.

Ann always helps us. _____I help her too, mum?

John _____ play tennis really well. He’s champion of this club. 

I ________ understand the chapter we had to read for homework. It was so difficult.