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Here is the control panel for a lift. Each button has a different function. The one at the top on the left opens the lift doors; the one at the bottom on the left closes them. The one in the middle on the left stops the lift. The ones on the right stop the lift at the different floors.
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The button at the bottom on the left …
opens the lift doors
stops the lift
stop the lift at the different floors
closes the lift doors