《What can we do at home to protect the environment?》SectionB PPT
《What can we do at home to protect the environment?》SectionB PPT第2页

Let’s play a game.

Say a sentence with and, or, but & while like this one by one. A : I like English and I’m good at it. B: I am good at English while my good friend is good at history. C: My good friend is good at history but …