So teacher I just finished my grammar and I think this unit is easy. But I got some thing that I know how to answer, but I don't really know the mean very well, like I do know the mean but I am not determine. Here is the question that I want to ask you. They want you to check each sentence is simple, compound, complex, or compound-complex. EX: ( 1. In the backyard we found an owl whose wing had been broken. A Simple B Compound C complex D compound-complex. So I think is little bit hard, I need help .