Scientists don’t often make ___ that are this important. - Scientists don’t often make breakthroughs that are this important., There is ___ a between making the battery bigger and increasing the weight of the product. - There is trade-off a between making the battery bigger and increasing the weight of the product., The engine used in the early model had many ____. - The engine used in the early model had many breakdowns., The ___ was made when he was working late in the laboratory one night. - The breakthrough was made when he was working late in the laboratory one night., There is a ___ between the performance of the engine and the need for it to be economical. - There is a trade-off between the performance of the engine and the need for it to be economical., Over 100,000 kilometres, this vehicle had no ____. - Over 100,000 kilometres, this vehicle had no breakdowns., The ___ of the experiment was not possible to guess. - The outcome of the experiment was not possible to guess., The ___ of the modifications was an increase in the product’s efficiency - The outcome of the modifications was an increase in the product’s efficiency, The ___ of this material is the cost, which most people can't afford. - The downside of this material is the cost, which most people can't afford., The biggest ___of the product was its reliability, which left much to be desired. - The biggest downside of the product was its reliability, which left much to be desired., The fact it doesn’t work underwater is a major ____. - The fact it doesn’t work underwater is a major drawback., Even though it had a number of ____, the first design was chosen. - Even though it had a number of drawbacks, the first design was chosen., This coat isn't ____, but it is showerproof. - This coat isn't waterproof, but it is showerproof., These ____ businesses help recycle your old stuff. - These eco-friendly businesses help recycle your old stuff., They drive ____, hybrid vehicles. - They drive eco-friendly, hybrid vehicles.,

Unit 5, compound nouns, speakout upper-intermediate

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