要值日生把教室打扫干净,你说:A.Clean the classroom, please.B.Let’s clean the classroom.
Ken and Linda’s favorite subject _______ science.
Bruce _______at 6:15 in the morning.
It’s good for us _______ some interesting books.
Sam is a ___ swimmer. He can swim very_____.
Mr. Green often us interesting stories .We all love him.