Helen is 15 years old, and Joan is 15, too. So Helen is ____ Joan.

The last time I _______ Jack, he _______football with classmates.

Premier Li Keqiang promised to punish the criminals _______sold the illegal vaccines(非法疫苗)

Our geography teacher told us the sun inthe east.

Who is bestbasketball player in your class —I don’t know. I’m new here.