It has been proved_____ taking exercise regularly does good to one’s health.
I don’t know whether small oranges are sweeter than big ______.
They were all tired, but _____ of them would stop to take a rest.
Although he 's wealthy,he spends___ on clothes.
Our manager allowed _______to take a holiday next week.
The teacher gave the books to all the students except _______who had already taken them.