A book may fill a gap.Logical formLearned from46 sentences. A gap can be long-term.Logical formLearned from46 sentences. A gap can be negative.Logical formLearned from46 sentences. A gap can be between a handheld device.Logical formLearned from46 sentences. (Achievement gaps) can be between students.Logical formLearned from46 sentences. Persons may close an (achievement gap).Logical formLearned from46 sentences. A gap can be a problem.Logical formLearned from46 sentences. A gap can be between revenues.Logical formLearned from46 sentences. A gap may expand.Logical formLearned from46 sentences. Gaps can be in services.Logical formLearned from46 sentences. A (budget gap) may pertain-to a us-state.Logical formLearned from46 sentences. A gap can be dramatic.Logical formLearned from46 sentences. Gaps can be in a market.Logical formLearned from46 sentences. A gap can be between words.Logical formLearned from46 sentences. An (income gap) may grow.Logical formLearned from45 sentences.