Sentence:  The construction <WSD>was</WSD> reasonably solid ; not like the cracker-box construction of so many of the motel units that have stucco all over the outside but walls that are thin enough so you can hear every movement of the people in the adjoining apartment . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)