Even if you didn't like my teacher, you ___________ argue with her.
didn't have to
_______you swim when you were 10?
Could
Last night, I ___________ go to bed early. I couldn't stay up late.
had to
In 1900s, people ____________ play video games.
couldn't
When I was a child I used to ________stand on my head.
be able to
In 1950, people ___________ use mobile phones.
couldn't
_________ (you) to write formal letters?
Are you able
If you tell him your problem he might________ help you.
be able to
Mozart __________ play the piano when he was 5.
could
I had a test on Monday so I ____________ study all weekend.
had to
After 6 hours climbing, we ________ reach the top of the mountain.
were able to reach
Last week, I _________ go to the hospital because I was sick.
had to
When the car broke down I was really pleased because I _____solve the problem.
was able to
They __________ cancel the flight because of the bad weather.
had to
Last Sunday, we __________ take the pictures because it was forbidden.
couldn't