填入下面空缺处的语句，最恰当的一项是有人说，每一种灾难都是一种祝福，每一种创作都是一种成熟。此言不虚。有时灾难是人生中的一场风雨雷电， ；有时灾难是人生中必经的一窑烈火，经其淬炼洗礼，我们从泥坯蜕变为瓷器，不留烟熏火燎的痕迹，只留沉静内敛的光华。

Have you ever been to the Summer Palace— No, but I it some day.

ilway was opened＿＿＿＿＿＿traffic＿＿＿＿＿＿＿ April 4, 1985

Mary _____ be in London because I saw her in town just now. [ ]

Only when your identity has been checked ____________.