can, could, be able to

Front

___ you hear the fireworks from your house last night?

Back

could

Front

You _______ write that report by Tuesday. I know you’re busy.

Back

will be able to

Front

I ___ touch my toes. See!

Back

can

Front

I ___ spend another moment in that restaurant. It was too noisy.

Back

couldn't

Front

I ___ never get the temperature right.

Back

can

Front

___ play pro tennis, you must be fit.

Back

To be able to

Front

___ you play an instrument?

Back

Can

Front

I'm afraid I ___ attend the meeting, I'm in Japan.

Back

won’t be able to

Front

___ you brought it to me at work?

Back

Couldn't

Front

They ___ save the men from the sinking ship.

Back

were able to