1. I'm sorry I won't _________ come.
can
be able to
2. I've not _________ sleep very well recently.
been able to
can
3. I'm locked in! I _______ get out!
can't
am not able to

Read these sentences and choose the correct answer to fill in the gaps.

1. A cat ______ climb trees.

can't
couldn't
can
could

2. When I was a child, I _______ drive a car.

couldn't
can't
could
can

3. She ________ buy a new car. She has enough money.

couldn't
can't
could
can

Read these sentences and choose 'don’t have to' or 'doesn’t have to'.

1. He ________ work in the evening.


don't have to
doesn't have to

2. She ______ wash her car.


don't have to
doesn't have to

3. Jack _______ swim a lot in this marathon.


don’t have to
doesn’t have to