This one cause I don't really like the background of this one do you guys like it or nah:

One college is argosy university which is in seattle

Walked would be the participle here. as it is a verb ending in -ed.

Acquiring english is a way of learning where you learn english by birth, this includes listening to your parents, brothers and sisters and on the whole learning it from the environment around you while mastering standard english need qualified institutes and teachers who make certain programs and syllabus to you master the standard english. this also can include a long session of academic studies before you can master the standard english.standard english is necessary for literary works, official usage and writing materials for standardized publications or when someone needs to speak publicly. in most cases the employers of a company also demand and like the use of standard english from their employees. 

D. the colonies continue to depend on britain for protection and governance