They are busy ________ (have) lunch.
They are busy to have lunch.为什么看见有写的They are busy having lunch.都是对的么?为什么?
人气：330 ℃ 时间：2020-04-12 10:45:17
解答
They are busy ________ (have) lunch.
答案：having
解析：be busy doing Sth.= be busy with Sth.忙于做某事
中文：他们忙于吃午饭.
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