Eating a __________ diet helps us to keep a __________ of cool and hot.
They are stamp collectors;they often ________stamps with each other.
-There is no need________,for the clock says we have about ten minutes to go. -Oh,don't be foolish. The clock on the wall is five minutes________.Don't you know?
-Could I have the small table by the window? -Sorry,sir. It ________ in advance.
With everyone's face ________behind the mask,it's hard to tell who they really are.
I like the countryside in summer. The golden wheat fields ________as far as the eyes can see.