3. Rachel：I’m thinking about going green. Can you tellme some things ＿1.＿ are eco-friendly and easily done?
 Ethan：Well, one thing that is not only good for theenvironment but also your health is taking the stairs.   Rachel：I do that already. I also ride my bike instead oftaking buses or trains.
 Ethan：OK, then you can stop buying and using things whichare out of plastic, like bottles.
 Rachel：I ＿2.＿ any drinks that come in plastic bottles foryears. I always prepare my own bottles that are made ofeither glass or metal and carry them with me.
 Ethan：I see. Have you ＿3.＿?
 Rachel：Of course! When I can, I just write things down inmy notebook that is made with used paper.
 Ethan：Rachel, you don’t need to go green because youalready are green!

  environment 環境 plastic 塑膠 metal 金屬
【題組】1.
(A) who
(B) what
(C) which
(D) where