Sentence:  A driver of a dairy truck , who <WSD>begins</WSD> work at 1 a. m. finishes before breakfast , then goes out and grows a garden , and who has used the cannery to save and feed a family of five , asked , `` What in the world will we do '' ? 
Meaning of the word marked with <WSD> tags:  take the first step or steps in carrying out an action