46 Their latest CD is a(n) _________ of new and old songs.   (mix)
47 The _________ of the snow made him blink.   (bright)
48 What's the most _________ way of heating this building?   (economy)
49 Write a _________ of your favourite beach.   (describe)
50 She is a former tennis world number one but has not played _________ (compete)
for two years.