如果他们迷路了，现在肯定已经给我们打电话了。

___Surely they'd have called us by now if they were lost.

你一定对故事的结局感到好奇吧？

___Surely you must be curious about how the story ends?

凭借她的天赋和努力，她肯定会成功。

With all her talent and hard work, she will ___surely succeed.