Can/can't or Could/couldn't

I ______ help you, I have a terrible headache.

• Can't

• could

• can

• could not

Last year I _____ clean snow in our garden

• could

• could not

• can

• can not

Bob ____ write letters last year

• could

• can

• could not

• can not

Ben ____skateboard well last year, now he is a champion.

• can

• can not

• could

• could not

Helen_____ cook well, but she reads how to do it

• can

• can not

• could

• could not

Mona is a good singer. She____ sing rock.

• can

• can not

• could

• could not

Sam _____ read on his own.

• can

• can not

• could

• could not

Tom is a very good helper at home, he ____wash dishes very well

• could

• could not

• can

• can not

Liz ____ play guitar 2 months ago, but now she plays it well.

• could

• could not

• can

• can not

Pam ____read books. Her mum reads them to her.

• can

• can not

• could

• could not