1. stop
2. dining
3. take
4. leave.... helping
5. do
6. see
35. The information which the receptionist gave me was very useful
36. If you don't ride your bike carefully, you may have an accident
37. Global warming badly affects the environment on the Earth
38. It causes greenhouse effect that lead to climate change
39. Several natural disasters are caused by climate change
40. We must save the Earth before it is late
