She was busy _____ after her mother.(look)
问题描述:
She was busy _____ after her mother.(look)
答
looking
答
looking
be busy doing sth.
答
looking
be busy doing sth.是短语.
译为:她忙着照看她的母亲.
答
looking
固定搭配
be busy doing sth
答
looking
固定搭配:be busy doing sth.忙于做某事