22, Having been to the disco the night before, she overslept in the morning.

23, Having worked in the garden all day, we were sunburned in the evening.

24, Not having slept for two days, she wasn’t able to concentrate.

25, Not having seen for ages, I didn’t recognize him.

26, Not having ridden a horse for a long time, I found it very difficult to sit on the saddle.

27, Having refused Nam’s offer of a lift in his car, she had to walk home.

28, Having read some documents about Green Earth, she decided to join the organization.

29, Having become too dependent on the use of electricity, we have to find alternative sources of energy before fossil fuels run out.

30, Having replaced all the light bulbs in her house with LED lights, she saved a lot of money on her electricity bills.

31, catastrophic

32, emissions

33, diversity

34, preserve

35, infectious

36, deforestation

37, heat-related

38, footprint

39, extinction

40, absorb

41, extreme

42, changing

43, significant

44, connection

45, emission