An arsenal may keep_up a shelling of positions.Logical formLearned from11 sentences. Difficulty may keep_up with demand.Logical formLearned from11 sentences. A country may keep_up a momentum.Logical formLearned from11 sentences. A premier may keep_up a trip to a home.Logical formLearned from11 sentences. Hosts may keep_up pressure.Logical formLearned from11 sentences. A president may keep_up pressure.Logical formLearned from11 sentences. Mediators may keep_up pressure.Logical formLearned from11 sentences. Persons may keep_up growth.Logical formLearned from10 sentences. A person may keep_up with a technology.Logical formLearned from10 sentences. A newsletter may keep_up a person to date.Logical formLearned from10 sentences. A person may keep_up an effort.Logical formLearned from10 sentences. A person may keep_up a person to speed.Logical formLearned from10 sentences. Persons may keep_up vigil.Logical formLearned from10 sentences. A female may keep_up a momentum.Logical formLearned from10 sentences. (Pop one) may keep_up favor a country.Logical formLearned from10 sentences.