举几个例句：They began to think about -what use---- could be made

举几个例句：They began to think about _what use____ could be made of these valuable materials
能不能举几个这样把一个固定结构中的make use of 名词use提到前面做定语从句的先行词的例子,比如 you can never imagine __what great trouble_____ we have had in treating the patients.