i want to know which test it was for the pictures you sent to us last time?

i want to know which test it was for the pictures you sent to us last time?
i want to know which test it was for the pictures you sent to us last time?

i want to know which test it was for the pictures you sent to us last time?
i want to know which test was the pictures you sent us last time for?
主要内容是I want to know which test was the picture for.然后 you sent us last time 是修饰picture的,所以要紧跟在picture后面,