May I have a cup of coffee
Dont let us go to the cinema.
I am sure he will be able to find the book tomorrow.
I think I will be able to learn all the words tomorrow morning.
He wont be able to run quickly.
I am sure you will be able to speak Spanish in three months.
You must not say that.Its not polite.
She had to invite Susans sister to her party,didnt she
The baby will be able to speak well in a year.