they are busy have lunch
Theyarebusy________(have)lunch.Theyarebusytohavelunch.为什么看见有写的Theyarebusyhavinglunch....
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? 展开
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? 展开
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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.
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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