Could / Couldn't / Can / Can't

When I was 5 years old, I _______________ (not/climb) the trees.

• couldn't

• can't

When she was 3 years old,she _______________ (walk) very well.

• could

• can

When I was young, I _________

play the guitar: it was too difficult for me!

• could

• couldn't

In 1950, people ,___________ use mobile phones.

• can

• can't

• could

• couldn't

In 1900, people __________send e-mails to each other.

• can

• could

• can't

• couldn't

Peter ___________ play tennis now : he broke his arm last Monday!

• can

• can't

• could

• couldn't

When Ann was a teenager, she __________

watch a horror film: it was too frightening for her!

• could

• couldn't

Mozart __________play the piano when he was 5.

• could

• can

She _________ ride a bike when she was three.

• couldn't

• can't

They _______________ English before they went to school.

• couldn't speak

• can speak