1 . 我呼吁同学们去参观这个艺术展，它展示了中国文化的多样性和魅力。
a. I ________________, which shows the diversity and charm of Chinese culture. (appeal v. )
b. I ________________, which shows the diversity and charm of Chinese culture. (appeal n. )

2 . 听到她考试失利的消息，她在父母面前流下了眼泪。
At the news that she failed in the exam, she ________ in front of her parents.

4 . 但是，（我们）值得核实一下公认的想法和意见，看看什么才是真正的环保之道。
But ________ common ideas and opinions to see what’s really green.

5 . 塑料需要几百年才能分解，但纸张分解所需的时间则要短得多。
________, but much less time for paper.

6 . 为了远离这些病毒的危害，建议我们应该养成健康的习惯。(it作形式主语)
To stay away from the harm of these viruses, ________________.

7 . 阅读很重要，因为它能增加我们的词汇量并拓宽我们的知识面。(as引导原因状语从句)
Reading is very important________________.

9 . 大卫一冲过终点线 ，观众中响起了雷鸣般的掌声和欢呼声。
________________, thunderous applause and cheers rose from the audience.