I doubt Sam will be the new chairperson of the Students’ Union. I don’t think he’d be able to organize things well.
_____of the warm water _____already been used up.
Stop cutting trees, _______ the earth will become worse and worse.
-- It’s a bit cold. Would you mind my ________ all the windows?--- Do as you like ,please.
I don't think there is ________ in today's newspaper.
The teacher often tells Jim and David _______ too much time _______ computer games.