1 . 演讲结束时，我们可以问他一些有关保护濒危物种的问题。
(一般表达)At the end of the speech, we can ask him some questions concerning the protection of endangered species.
(高级表达)________________ (用强调句型强调some questions concerning the protection of endangered species)

2 . If you have any information about the recent incident at the station, please contact the local police. (句型转换)
→If you have any information ________________ the recent incident at the station, please contact the local police.