I'm glad you guys noticed! The problem sets are indeed printable now. We'll soon have LR drills sorted by question types (e.g. all weakening q's from pts 30-39) too.
Just play around with the sentence to determine the meaning. Ask yourself, what is required to create conditions of EJ? ROW is required. Or just rearrange the sentence. "In order to create conditions of EJ, ROW is required." EJ --> ROW.