The number of books in the bookshop is about 10,000 and a number of them about science.
____you study, ____grades you will get.
---Look! The woman standing there is Mrs Green. ---Itbe Mrs Green , she has been to England.
—Jack, your hair is too long! —Really? I’ll have it _____ right now.
My parents like the music ____ is quiet and gentle.
We often see Betty ____ the old man with his housework.