1) alter a) change b) evidence c) respond 2) improve a) show b) react c) make better 3) reinforce a) come near b) account for c) strengthen 4) obey a) do what someone says b) describe in detail c) respond 5) innovation  a) compliance with an order b) a new method or idea c) basic source 6) origin a) basic source b) evidence c) response 7) improvement a) successive change b) description c) upgrade

Mastering E - Unit 1

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