Two policeman happened _____ the traffic at the crossroads when his car was hit by a drunk driver.

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• Two policeman happened _____ the traffic at the crossroads when his car was hit by a drunk driver.
• Two policeman happened _____ the traffic at the crossroads when his car was hit by a drunk driver.A、to direct B、to directing C、 to be directing D、to be directed
• Harry did not stop his car at some traffic lights when they were red,and he hit another car.Harry
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