Look, she _____a book over there.A .is reading B .is looking C .is seeing
_______, Coca-Cola began to enter China’s market.
______black—headed gulls(红嘴鸥) come to Kunming to spend their winter every year.
Helen is my friend. She is in ______ at Beijing No.11Middle School.
---Look at that tall building!---It is _______tallest building in the city.
Tomorrow is my father's____birthday.I will buy him a gift.