Mass. grocers scramble to keep up with consumers ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Suzanne Kreiter/Globe staff Shaw’s, the state’s second-largest supermarket operator with 84 stores, recently laid off 700 workers. Jacob Slaton/Reuters Walmart and Target promote themselves as one-stop supermarkets for busy families. Kayana Szymczak for the Boston Globe Whole Foods Market has 21 stores in Massachusetts and is building three more over the next year. JOSH REYNOLDS FOR THE BOSTON GLOBE Johnnie’s Foodmaster will close all 10 of its stores, and is selling leases of six of them to Whole Foods. Carlo Allegri/Reuters Stores like Trader Joe’s use offbeat marketing to promote innovative stock. Gretchen Ertl for The Boston Globe Wegmans operates a massive store in Northborough, and has two more locations on the way.