Przekształć podane zdania stosując inwersje stylistyczną

1. If I'd known earlier, I could have helped them.
Had .....................

2. He can do many sports well and he's also a clever student.
Not only .....................

3. We didn't know much about his private problems.
Little .....................

4. We were able to understand the situation fully after we saw the sales results.
Only .....................

5. It's the most foolish story I've ever heard.
Never .....................

6. As soon as I lay down on the sofa there was a knock on the door.
No sooner .....................

7. You must not open the door to strangers.
Under no circumstances .....................