________ of the students in our class is 64, and ________ of them are girls.
—What would you like ____? —Some milk, please.
—Is Mr. Brown a good teacher? —Yes. He is kind ____ us. We love him.
—Help yourselves, kids! —______
—What does your uncle do? —He is a farmer. He works ____ a farm.
— ____ is the letter from? —It’s from my friend, Wang Hui.