Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions. 

"I'm sorry. I didn't do my homework.", Huyen said to her teacher.

The government's major __________ has not only included legal, economic, and political gains but also changed the ways in which people live, dress, dream of their future and make a living.

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. 

I prefer the second option - their advantages are simplicity and cheapness.

When there are diametrically opposing views on a big issue that concerns millions of people, doing comprehensible research just makes sense. 

She has ___________ her portrait framed and it's up on the wall of her living room.

Every year several languages ________________. Some people think that this is not important because life will be easier if there are fewer languages in the world.