Remember not to pretend to know what you don’t know.— _____. My last lesson is still fresh.

I’m sure David _________ when we get home.

(2013·合肥模拟)—Go and have great fun! I will cope with　　　you leave to me properly. —Thanks a lot.

Why does she always ask you for help?—- There is no one else ___________, is there?[ ]

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。