Modals of Ability and Possibility

I ... convince her to read the book.

• managed to

• could

People say that Albert Einstein ... read until he was nine.

• couldn't

• can't

I'm away this weekend, so I ... come on Saturday.

• might not be able to

• won't be able to

The homework was really difficult, but I ... finish it.

• could

• managed to

Do you think you ... bring my book back tomorrow?

• could

• might be able to

My sister ... read by herself from the age of four.

• managed to

• could

I ... write a book review for the website next year.

• could

• will be able to

In the end, I ... persuade my dad to buy me a scooter.

• managed to

• will be able to