1) Simple machine a) b) c) d) 2) Complex machines a) b) c) d) 3) Complex machines a) b) c) d) 4) Simple machines a) b) c) d) 5) Complex machines a) b) c) d) 6) It needs electricity. a) b) c) d) 7) It needs electricity a) b) c) d) 8) It needs electricity. a) b) c) d) 9) What do they need? a) b) c) d) 10) What does he need? a) b) c) d)

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