61. 让我们利用这次长假去香港旅游。

9.

64. 你一旦养成了坏习惯，改掉它是很难的。

49. Volunteers are also needed in hospitals ______ children while their parents see a doctor.

4.

44. More and more young people choose plastic surgery to ____.

32. Stressful environment leads to unhealthy behaviors such as poor eating habits, which ____ increase the risk of heart disease.

41. According to the passage, the need for cosmetic surgery among the youth is on the rise in these countries EXCEPT ____.

22. Without the Internet, we ____.

5.

10.

38. Which of the following is NOT true about Internet-based language learning products?