—I doubt if he __________ to the party with us tonight.— I believe if he __________ his homework, he will go with us.
_____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.