Listening · Part 2
Listen to the audio and complete the sentences with a word or short phrase.
This business is (1) .......... of the Californian economy. The graduates collect waste (2) .......... early in the morning. The waste product is used to cultivate (3) .......... mushrooms. The objective of the enterprise is to grow valuable (4) ........... The presence of caffeine in the grounds makes it impossible…
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