Mr. Wu is a teacher with _______. He often tells us some of his unusual _______ in America.
Peter is an excellent student in my class.
---- Hello , this is Tina speaking. Is that Sam ? ---- Sorry, he isn’t here at the moment . ________ ?
---Let me help you to carry the box. ---No, thanks. I can do it by _______.
Don’t waste your time. You should ________ your work.
--- It’s good for you to ________ in class. --- I think so . Thank you.