He was just __ __ when there was a loud __ __ the door.他刚要入睡,就有人大声敲门．4空
问题描述：
He was just __ __ when there was a loud __ __ the door.
他刚要入睡,就有人大声敲门．
4空
答
He was just (falling)(asleep) when there was a loud (knock)(at)the door.
答
fall asleep just副词 修饰动词用原型
knocking at loud形容词 修饰名词用动名词