Sentence:  Similarly , a girl who graduates with a good working knowledge of stenography and the use of clerical machines and who <WSD>is</WSD> able to get a job at once may wish to improve her skill and knowledge by a year or two of further study in a community college or secretarial school . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)