Haze (雾霾)appears around us. Let’s do ________ helpful to protect the environment.
–How old ________you , Jim? ---I am __________.
---Is Millie happy at school every day ? ---_____ . She likes her school very much.
Please _______ this book. It will tell you how ______ nice food.
Can Mr Smith play football very ___________?
Many people like to ___________basketball games.