----We have a lot of cakes here.Help _____ to some more ,kids.----Thank you.
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.
---Who__________ English last term?---Mr. Wu did.
---Has Tom finished his homework?---I don’t know. But he _________ it the whole morning.