4 . 根据句意，选择单词并以其适当形式填空。

1. Destruction of the environment is one of the most serious ______ we face.
2. Usually a child’s behavior is a ______ of his family environment.
3. The price of wine varies ______ depending on where it comes from.
4. With the exam ______, I find myself working harder than ever before.
5. He spent the evening ______ up Christmas presents.
6. Students should establish an ______ of environmental protection.
7. They ignored the ______ time and were late for the meeting.
8. The shop is small, but it offers a ______ of nice goods.
9. I ______ her to think twice before she makes a decision.
10. Betty ______ to Steve that Sara never gave her a chance to talk.

9 . 单句改错
1. You will live easily if you have a considerable friend with you.
2. We can hardly believe what she says because she is constant changing her mind.
3. I feel like have a talk with you after supper.
4. He finished the tea and lay the cup aside .
5. We should listen to vary opinions when making s decision.
6. In most countries, turn 18 marks the start of adulthood.

10 . Thank you for________ to share your suggestions for high school with us.

A．coming

B．come

C．to come

D．came