--- Mary knows so much about ______earth! ---Yes, although she is only ____eight- year-old girl.
Some students are so ______ that they often make mistakes in their homework.
It’s about 5 away from here to the mountain.
—Which do you like , summer or winter? —I prefer summer.
— Where is Lin Tao? — He _____ to the teachers’ office. He will be back soon.
— Don’t forget _____ your history and math books tomorrow morning. — Thanks. I won’t.