Have you found (something strange/anything strange )in their room?Can you hear (something strange/anything strange)?

Have you found (something strange/anything strange )in their room?Can you hear (something strange
/anything strange)?

第一个用anything strange,普通的疑问句中用anything,不用something.
第二个用something strange,这是稍微特殊点的情况,当提问者期望得到肯定的回答时,疑问句中也用something,因为提问者应该已经听到某些奇怪的声音了,希望得到别人的确定.