After the water is 18, the ball-shaped pieces are put under the sun to dry before they can be used as a firewood or charcoal substitute.
答案：(D) squeezed out
squeeze out 意為「把（水分）擠出來」：水分擠掉之後，球狀紙團才拿去曬乾；boiled down（熬煮濃縮）、fired up（點燃、激勵）、kicked off（開始）都與流程不合。
答對率 33%。
squeeze 你大概只記得「擠檸檬、擠牙膏」，加上 out 之後不確定意思有沒有變。其實就是字面的延伸：squeeze out ＝ 把裡面的東西擠出來，最常搭配的就是水分或液體：Squeeze out the excess water before hanging the towel.（把多餘的水擠掉再晾毛巾）。
前一句說紙張被壓成球狀；本句說水分被擠出後拿去曬乾，才能當柴火替代品。浸泡 → 壓成球 → 擠水 → 曬乾，順序清清楚楚，中間這一步只能是「擠出水分」。
boiled down 是「熬煮濃縮」，需要加熱，但下一步才要拿去曬太陽，不合流程；fired up 是「點燃、激勵」；kicked off 是「開始」。
squeeze out（擠出）、squeeze into（擠進）、boil down to（歸結為）、kick off（開始）。
If old newspapers are stacking up in your house, there are options other than tossing them out or selling them to a recycler.
Some environmental scientists suggest turning newspapers 16 charcoal. This can be done by soaking sheets of newspaper in water for two hours and then 17 them into small pieces. These pieces are then compressed into balls. After the water is 18, the ball-shaped pieces are put under the sun to dry before they can be used as a firewood or charcoal substitute.
19 suggestion made by the experts is to dip newspaper sheets in vinegar and water, and use them to clean windows, mirrors, and tiles. Old papers can 20 be used to line rubbish bins and as packing material when mailing breakable goods.