()12. It was China that first ______ coal (煤) and used it in the world.
A. invented
B. discovered
C. found

()13. My English teacher spoke ______ quickly ______ I could hardly understand him.
A. too; to
B. such; that
C. so; that

()14. The music is too ______，so I have to speak ______.
A. loud; aloud
B. aloud; loud
C. loud; loud

()15. —Vince, is it difficult to play tennis?
—Not at all, ______.
A. Sounds good
B. Good idea
C. It's a piece of cake

Ⅳ.从方框中选择正确选项。(方框中有一个选项与对话内容无关)
A. Why do you say that?
B. Can you give me an example?
C. What's that?
D. What do you think of English?
E. Learning a second language is always difficult.
F. They all sound different.
A: English is a difficult language to learn，isn't it?
B: Yes. 1
A: True, but English is harder than most. It's a crazy language.
B: 2
A: Because one letter can have several pronunciations.
B: 3
A: Sure. Listen to the "o" in hot，cold，love and today.
B: Hmm. 4
A: You see，there are at least four ways to pronounce "o". And there's another problem with English.
B: 5
A: One word can have several meanings. For example，the word "catch". You say to catch a ball，to catch a cold，to catch a bus and to catch a mouse. They're very different.
1. ______ 2. ______ 3. ______ 4. ______ 5. ______