Clear it of what? grass, weeds, rubbish, gypsies ?
can you clarify please.

Carefully!

Sounds like another exam question to me... Sorry if I'm wrong Agnes

That's what I was thinking Moon grower.

Agnes if this is an exam or test question then asking us is not going to help you learn. Check out the course book or other books, google on the internet. If you still don't understand ask your course tutor.