1) Maria had a coffee ___ Max was doing his homework. a) while b) when 2) We were walking home ______ we saw the fire a) while b) when 3) _____ the plane landed, Elena was waiting at the airport. a) while b) when 4) _____ Richard was checking the map, I got some petrol. a) while b) when

ww3 s1 while/when

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