Tommy, you can never let others know what I have toldyou today.—Don’t worry. I will keep the ______.

8. There’s no light on; they _____ be at home.

Do you ________ to the idea of a low-carbon life?— It sounds tough, but it is a tendency. [ ]

______ he can hardly read is ____________ he is slow in mind.

Look! You have left the room ____, and you must put it ____right away.