must- должен
have to-должен
should- должен, когда предлагаем
ought to- должен
<span>My friend and I always do our best to help one another.
</span><span>Friends are very important in our life. I think one cannot live without friends. </span>
Was you invited to the party?
I was invited to the party,
Was this soup cooked by your mum?
This soup was cooked by my mum
was the project changed?
the project was changed
Were they laid?
they were laid.
was it made by you?
it was made by me.