Students will fail. Their projects aren't done by tomorrow.
Students whose projects aren't done by tomorrow will fail.
The streets in the city centre are very narrow. They... (ban) cars there.
Should ban.
Don't tell your parents if you don't have to. (unless)
Don't tell your parents unless you have to.
The five teachers say they h ave learned a lesson. They won't forget it.
The five teachers say they have learned a lesson which/ that they won't forget.
Do you mind if I park in your space today?
May I park in your space today?
You want to go to the party next week, but you want to go with a friend. (unless)
You won't go to the party unless you go with a friend.
The lunch break was much too short.They were supposed to eat and relax then.
The lunch break, when they were supposed to eat and relax,was too much short.
Your friend throws an empty can of cola on the pavement. (mustn't)
You mustn't throw litter on the pavement.
We are close friends because we have a lot in common. (wouldn't)
If we didn't have a lot in common, we wouldn't be friends.
Maria won the first prize in the art competition. She spent weeks working on her paintings.
Maria, who spent weeks working on her paintings, won first prize in the art competition.
It was possible for them to buy a flat, but they didn't. (could)
They could buy a flat but they didn't.
I don't get together with Lucas because he works most evenings. (didn't)
If Lucas didn't work most evenings I would get together with him.
The local animal shelter is having a pet adoption day. Its volunteers are dedicated individuals.
The local animal shelter, whose volunteers are dedicated individuals, is having a pet adoption day.
It is not necessary to wait in the queue.
We don't have to wait in the queue.
The thieves didn't find my valuable possessions because I hide them very well.
If I hadn't hidden my valuable possesions, the thieves would have found them.