Надо слова вставить в пробелы which/that, before, not, rid, few, on, into/to, with, and, a, of/for, so, than, all/any, other dealing with waste plastic every year people throw away millions of tonnes of plastic bottles, boxes and wrapping. these create huge mountains of waste (1) __ that are extremely hard to get (2) of. now, a new recycling process promises to reduce this problem by turning old plastic (3) new. scientists have taken (4) long time to develop their ideas because waste plastic has always been a bigger problem (5) substances like waste paper. you can bury plastic, but it is years (6) it breaks down. if you burn it, it just becomes another form of pollution. a (7) products, for example bottles, can be re-used but it is expensive or difficult to do this (8) a lot of plastic products. now a group of companies has developed a new method (9) recycling that could save almost (10) plastic waste. the advantage of the new process is that nearly every type of waste plastic can be used: it does (11) have to be sorted. in addition, labels and ink may be left (12) the products. everything is simply mixed together (13) heated to more than 400 degrees centigrade (14) that it melts. it is then cooled, producing a waxy substance that can be used to make new plastic products such as bags, bottles and, among (15) things, computer hardware.

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