Can, Could, Able to Exercise

I'm very tired. I _________ (haven't been able to / couldn't) sleep recently.

What famous man __________ (wasn't able to / couldn't) speak until he was 3 years old? Winston Churchill!

Is this sentence true or false? We use can or could for ability (i.e. knowledge to do something) more often than we use to be able to.

We __________ (weren't able to / couldn't) do the English exercises. They were too difficult.

He's very happy now that he ________ (has been able to / could) find a new job. He starts tomorrow.

I've always wanted __________ (able) speak another language.

I forgot to bring my phone so, I ________ (wasn't able to / couldn't) phone you.

It was a very difficult football match. But, in the end, we ________ (were able to/could) beat the other team.

Now that she has lived in her own apartment for the last 3 months, she _________ (is able to / can) cook really well.

Fortunately, the police _________ (able) rescue the family that was trapped in the car.

__________ (able) reserve a table at the restaurant?

The doctor _________ (able) see you right now. He has another appointment.

_________ (I can't / I'm not able to) call him because my telephone is out of battery. I need to charge it.

She ________ (not / able) to walk since she was 10 months old.

He ________ (wasn't able to / couldn't) speak to her because she wasn't there.

Will you ________ (able) come to my wedding?

I _________ (not / able) accept the job because it was too far away.

We need someone who _________ (can / is able to) speak English very well.

The experts say that everyone _________ learn another language.

We ___________ (haven't been able to / could) go on holiday this year. We don't have enough money.

I looked in every shop for some new shoes. Finally, I ________ (was able to / could) find some in the very last shop.!

Is this sentence true or false? You can use couldn't for all the same situations as wasn't able to.

When I go to Malta next month, I _______ (able) practise my English.

It was very hard for her to remember the past and she _________ (wasn't able to / couldn't) tell us what happened.

I'm much better now. I should ________ (be able to / can) walk in a couple of days.

Although the boat caught fire, everyone _______ (was able to/could) escape.

We will be on holiday next month so we ________ (not / able) go to your party.

Is this sentence true or false? The structure to be able to is more formal or polite than can.

I _________ (not / able) make dinner yet. The baby hasn't stopped crying.

Have you spoken to Jane yet? No, her mobile must be switched off. I _______ to able to talk to her yet.

He ________ (could / was able to) speak before learned how to walk.

I'm sorry that I _________ (not / able) to come to the theatre with you last night.

Is this sentence true or false? Although we use can for ability, we use the form to be able to for particular situations (i.e. to manage or finally succeed).

She __________ (not / able) do any shopping because she forgot her money.

You need _______ (able) swim if you want to go diving.

When we were young, we used ________ (to be able to / can) play football on the street. There are too many cars to do that now.