Sarah, it is high time that you_______; or you won’t have time to______ before the party.

By no means true that all native speakers of English know their own language very well．[ ]

下列各句中加点成语的使用全都正确的一项是①嫉妒心强的人对任何人的成就都不赞一词，甚至还会讥讽嘲笑。泼成功者一身冷水。②新东风标致3008与福特翼虎虽然在动力上不分伯仲，但新3008在配置上以安全、舒适、科技的全方面优势精准地诠释出了高性能欧系都市SUV的魅力所在，展现了不俗的潜力。③人生能有几回搏选择了高考，就选择了拼搏，切莫辜负了豆蔻年华。④“2016中国环保上市公司峰会暨肇庆金秋经贸洽谈会”拉开帷幕，数以千计的客商趋之若鹜，聚集肇庆新区商务中心共襄盛举。⑤合上《红楼梦》，眼前尽是一个个玲珑剔透的女孩儿，一曲曲心生叹息的人世情。⑥他的文章没有新鲜的论断，架构也乏善可陈，难登大雅之堂。

He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside．

The police are trying to find out the ____ of thewoman murdered in the bathroom