He__will leave__for Shanghai tomorrow.横线部分可以改成shall leave或is leaving

He__will leave__for Shanghai tomorrow.横线部分可以改成shall leave或is leaving
He__will leave__for Shanghai tomorrow.横线部分可以改成shall leave或is leaving

He__will leave__for Shanghai tomorrow.横线部分可以改成shall leave或is leaving
可以,都没问题,都是将来时的表示方法
is leaving更口语化一点