________ going to the program If You Are the One, she knew she had to be there or her mother would be unhappy.

You should get up early _______ you would catch the train.

There was a time in Chinese history________we had to use foreign oil.[ ]

Professor Zhang gave all the textbooks to all the pupils, except ________ who had already taken them.

The man who thought of ______a gas engine _____ wheels was the inventor of the automobiles