Every day we should keep our classroom _________ .
| A．cleaning | B．to clean | C．clean | D．cleans |
-of Class 1 students is in the classroom.
-They are having a P.E. lesson on the playground.
A. All B. None C. Neither.
— I have never visited a paper factory.
—.
A. So have I B. I haven’t now C. Neither have I
He’s read this book before，?
A. hasn’t he B. doesn’t he C. isn’t.
Thank you for your help, Linda. You made ________ possible for us to finish the work in time.
| A．this | B．it | C．them | D．that |
Bill and his sister Sally enjoyed ________ at the dancing party.
| A．myself | B．himself | C．herself | D．themselves |