Can you tell me where my uncle is?-Yes,of course,________．[ ]

依次填入下列各句横线处的成语，最恰当的一组是（ ）①在当前国际局势复杂多变，我国处在经济转轨、社会转型的特殊时期，各种社会矛盾和危机多发的情况下，各种思想和言论难免__________，我们一定要擦亮双眼，仔细辨析。②近日媒介披露了一件__________的新闻：在同一天同幢楼里发生了两起凶杀抢劫案。③在社会主义经济建设和制度更新中，经济改革与所有制及产权问题__________。④那本书刚才还放在这里，这么一会儿，怎么__________了

Without your timely help, we ________ in big troublethat day.

There are so many books!It is not easy for us to decide what to take and what to.

Mr. Smith is very happy because the cars made in his factory have never been ______.