Mary was obliged to study Science everyday last month

Mary _____ study Science everyday last month

It was possible for Judy to carry all the groceries

Judy _____ carry all the groceries

I was able to swim underwater when I was 8

I _____ swim under water when I was 8

The goalkeeper was not able to play well at the game

The goalkeeper _____ play well at the game

William couldn't borrow a book with his old library card. He needed to renew it.

William _____ his library card.

Charlie didn't need to do homework when he was a child

Charlie _____ do homework when he was a child

It wasn't necessary to park outside school last year.

I _____ park outside school last year.

In my previous school it wasn't necessary to wear uniform

We _____ to wear uniform in my previous school

Anna was able to sell her iPhone for a good price

Anna _____ sell her iPhone for a good price

When I was at school students were obliged to sing the hymn before classes.

When I was at school students _____ sing the hymn before classes.