Where ____rubbish， there are flies.

Many a man _____ come to help us.

 He is the only one of the students who _____elected.

 Three-fourths of the homework _____today.

Jane is one of the best students in her class who _____by their teacher.

The United States of America _____one of the most developed countries in the world.

—How long are you staying there?

— _____depends.

I hate _______ when young people speak to the elderly in a rude way. 

　　　　　　is very clear to everyone that he's round and tall like a tree.

　　　　　　　raining hard for 3 hours without stopping.