they use computers to keep the traffic ( ) smoothly. A.being run B.run C.to sun D.running
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時間:2024-08-17 11:06:00
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they use computers to keep the traffic ( ) smoothly. A.being run B.run C.to sun D.running【
【專家解說】:D.running keep sb/sth doing 固定短語 讓某人/某物一直處于某種狀態(tài),記住就可以了。
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