She ______ work on weekends at her previous job.
can
have to
had to
has to
They ______ attend the meeting. It's mandatory for all employees.
could
He ______ wake up early tomorrow for his flight.
In the past, people ______ use the internet because it didn't exist.
couldn't
didn't have to
can't
don't have to
Yesterday, we ______ finish our work before leaving the office.
You ______ use a calculator during the math exam. It's not allowed
______ you help me with this heavy box?
Have to
Can
Could
Had to
Students ______ wear uniforms in our school. It's a rule.
When I was a child, I ______ climb trees very well.
You ______ buy the book if you don't want to. The library has copies.
My sister ______ speak three languages fluently.
We ______ wait in line yesterday. There was no one else at the counter.
When my grandfather was young, he ______ walk to school every day.
I ______ understand the lesson yesterday. It was too difficult.
Children ______ play outside after finishing their homework.