You can’t go back home______you finish your homework.

Mrs. White came back late            the heavy rain yesterday afternoon.

Be more careful this time, ______ you’ll make the same mistake again.

It was the coldest winter, and many animals died __________ the cold.

Youwillfallbehind others     youwork hard.

Eddie was sleeping _______ Millie was reading a magazine.

He has to earn lots of money      he can buy his children nice food and clothes．

—Hurry up! The bus is coming.
—Wait a minute. Don’t cross the street        the traffic lights are green.

In this world there is no shortcut to take. So people, no matter how clever they are, can’t succeed_______ they work hard.

--- Look! Lots of  people there. What’s wrong?
--- An old lady was going across the road ________ a car hit her.