________ difficulties we may come across, we will help one another to overcome them.

You were _______ to take your shoes off when you entered the school lab, but you didn’t.

Which one do you want to buy, anipod touch 4, an ipad 3 or an iphone 5 —______. They are too expensive.

Shall we see each other at 9 o’clock tomorrow morning—Sorry, let’s make it _______ time.

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。