1) Turn off the computer after use. a) b) c) d) 2) Be quiet in the computer lab. a) b) c) d) 3) You have to line up in front of the lab door. a) b) c) d) 4) We should press keyboard keys gently. a) b) c) d) 5) Do not eat near the computer. a) b) c) d) 6) Do not pull wires and cables of the computer. a) b) c) d)

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