The coat I bought yesterday is not expensive at all.As a mat

The coat I bought yesterday is not expensive at all.As a mat the coat I bought yesterday is /was expensive? Yesterday i bought a book.Books are not very expensive. This is the shop where/which I bought the coat yesterday He bought the same coat that i was wearing yesterday? 1)don;t/all/go/at/to/not/that/but/restaurant/expensive/the/i The coat is expensive.I don't have enough money The coat,which my mother bought,is expensive是限定性定语从句还是非限定性? The pen is not as expensive as that one. this is the same pen as i bought yesterday.(同义句替换) this_____ .This is _____ as the one you bought yesterday. This is ( )as the one you bought yesterday