Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

John has a thorough knowledge of the history of arts.

If I will have to make a difficult decision, I will discuss it with my friends.

He was so brave that he could tell her what he thought about her.

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

      Mount Everest is the highest mountain in the world. It is also the highest trash pile in the world. About 400 people try to reach the top every year. Having many climbers means a lot of trash.

      It is very dangerous to climb Mt.Everest. The air is very thin and cold. Most people carry bottles of oxygen; they could die without it. When the oxygen bottles are empty, people throw them on the ground. When strong winds rip their tents, people leave them behind. They don’t have the energy to take the trash away. They only have enough energy to go down the mountain safely.

       Trash is a terrible problem. Since people first began to climb Mt.Everest, they have left 50, 000 kilos of trash on the mountain. Several groups have climbed the mountain just to pick up the trash. When people plan to climb the mountain, they have to plan to take away their trash.

What is the main topic of the passage?

Don’t touch the window. It _______.

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

He suggested to go to Ha Long Bay since it's a famous natural wonder of Viet Nam.

She is the most intelligent woman I have ever met.

Althought she seems intelligent, she’s not to be relied on.