依次填入下列各句横线处的词语，最恰当的一组是①锦袋内掣出那管凤箫，李师师接来，口中轻轻吹动，端的是 之声。②他的表情很细腻，可以说一丝不苟；嗓子也很响亮，唱几句真的是 。③人民以胜利的欢呼，对我们历史上这一 的大事件，表示了他们的赞许。

Has Tom finishedwriting his essay today — I haveno idea He ______ it this morning

My mother has been to Kunming before.— ___ . It’s a good place .

They practise on the playground. They have fun together.

You ________ come to his officeOur boss won’t be back until next week