After Einstein’s theory of relativity, people began to perceive the universe in a different way.
A. Einstein’s theory of relativity confirmed many ideas about how the universe began.
B. Until Einstein’s theory of relativity, people knew hardly anything about the universe.
C. Following Einstein’s theory of relativity, people realized that the universe was changing constantly.
D. Einstein’s theory of relativity introduced people to a new manner of seeing the universe.

I understand why you detest her. I’ve finally met her.
A. I understand why you don’t like her due to I’ve lastly met her
B. Now that I have finally met her, I understand why you hate her.
C. I met her and I know your feeling to her.
D. Since I finally met her, I understand why you like her.

We arrived at the airport. We realized our passports were still at home.
A. It was until we arrived at the airport that we realize our passports were still at home.
B. We arrived at the airport and realized that our passports are still at home.
C. Not until had we arrived at the airport, we realized our passports were still at home.
D. Not until we arrived at the airport, did we realize that our passports were still at home.

I did not read his book. I did not understand what the lecturer was saying .
A. What the lecturer wrote and said was too difficult for me to understand.
B. I found it very difficult to understand what the lecturer said in his book.
C. I would have understood what the lecturer was saying if I had read his book.
D. The lecturer's book which I had not read was difficult to understand.

It was an interesting novel. I stayed up all night to finish it.
A. I stayed up all night to finish the novel so it was interesting.
B. Unless it were an interesting novel, I would not stay up all night to finish it.
C. Though it was an interesting novel, I stayed up all night to finish it.
D. So interesting was the novel that I stayed up all night to finish it.

A. officialdom B. millennium C. westernize D. division

A. geographical B. Aborigine C. expedition D. Australian

A. survival B. industry C. endangered D. commercial

A. footsteps B. superstitious C. melancholy D. forceful

A. mutually B. apologize C. permission D. reaction