Their teachers are very ______ to them.A .difficult B. boring C. friendly
—Who is ________ English teacher? — Well, it’s Mrs. Green. She teaches ________ English very well.
There are more than fifty _________ in our school.
Lucy is ________ university student. She likes playing _______ piano.
This kind of cup _______ of paper.
—Morn, must I clean my room now? —No, you. You can do it in the afternoon.