Go home right now —  ______ your parents will worry.

America's car industry will continue to break down     some progress is made to close the  gap.  

Because of Einstein’s Theory of Relativity, scientists never again regarded the world        .

--- Hurry up. The bus is coming.
--- Oh, no. We mustn’t cross the street        the traffic lights are green.

Children are not recommended to see such films________bad for their mental development.

．--- Hurry up. The bus is coming.
--- Oh, no. We mustn’t cross the street_______the traffic lights are green.

— Do you think we can get there on time?
—Yes,       the car doesn't break down.

My parents live in a small village. They always keep a lot of candles in their house _______ there is a power out.

It is in this very village, _______ Mary was born 35 years ago, ________ she built her first school, _____ inspires everyone to help her.

Gun control is a subject _______ Americans have argued for a long time.