单项选择 适中0.65 引用3 组卷267
—The problem is too difficult. Let’s go to ask Mr Wu for help.
—We’d better make it tomorrow. The lights in his office ________ for a while.
—We’d better make it tomorrow. The lights in his office ________ for a while.
| A．have been on | B．have been off | C．have turned on | D．have turned off |
2022·江苏南通·一模
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Sometimes we can ________ the products before we make the decision.
| A．turn off | B．try out | C．work out | D．get off |
Please _______ the lights when you leave the room. Be a greener person.
| A．turn down | B．turn on | C．turn up | D．turn off |
Please ________ the light. I could hardly see what the sign says.
| A．turn down | B．turn on | C．turn off | D．turn up |
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