第44页 - 经纶学典学霸八年级英语上下册【江苏国标】

a smile

Look into the sky

Close your eyes

bring a different feeling

Take a seat

No. Because air travel uses a lot of energy./Because it's not an environment-friendly way.

To protect the natural environment and keep wild plants safe.

Reuse our towels instead of what the hotel provides./Always carry an eco-friendly bag

while shopping./Save electricity and water in every possible situation.(答案不唯一)