---Where are you going, Sam? ---There isn’t any ______ in the fridge. I’ll go and buy some.
It’s two and a half weeks since the exchange students __________ Wuxi.
Little Tom has got a lot of birthday presents, but he isn’t able to take all of them ___.
We can have ___ bluer sky if we create ___ less polluted world.
--Why not join us in the game, Kitty? ---_____________, but I have to do my homework first.
There was __________rain last night and it’s _________cold now.