Relier Pairs Vocabulary Unit 7 Matching GameVersion en ligne Test your knowledge of Vocabulary Unit 7 concepts with this fun matching pairs game! par Maria Florencia Mena 1 Spare parts 2 Compatible 3 Affordable 4 Ahead of its time 5 Tried and tested 6 Upgrade 7 Innovative 8 Behind the times 9 Experimental Something that is able to exist or occur together without problems or conflict. Something inexpensive; reasonably priced. A duplicate part to replace a lost or damaged part of a machine. Something that was proven in the past to be effective or reliable To improve the quality or usefulness of something Something based on untested ideas or techniques and not yet established or finalized. Late, old. Something considered too advanced or modern to be understood or appreciated during the time Something featuring new methods; advanced and original.