Fujian is ______ the east of China. [ ]

Where is Lucy?— She isn’t here. She has Beijing.

Sarah is _______ a kind-hearted girl _______ she often helps people who are in trouble. [ ]

Someone is knocking at the door.- It ______ be Tom. He is still in the school.

Who won _____ prize for the “Most Beautiful Nature” photography? — _____ 18-year-old girl.