Everyone knows that _____ sun is in the center of the solar system（太阳系）

Who ran most__________ at the sports meeting in your class? — Li Ming did. He won the first place.

How _____ will his family return?-In a week.[ ]

Mom, my classmates invited me ____ a field trip. May I go with them?—OK.

The second Sunday of May isMother’s Day. It’sspecial day for children to showtheir love to their mothers.