A (downtown intersection) can be busy.Logical formLearned from61 sentences. An airspace can be busy.Logical formLearned from61 sentences. A (holiday shopping season) can be busy.Logical formLearned from61 sentences. A person can be busy with (school work).Logical formLearned from61 sentences. A shift can be busy.Logical formLearned from61 sentences. A building can be busy.Logical formLearned from61 sentences. An activity can be busy.Logical formLearned from61 sentences. Volunteers can be busy.Logical formLearned from61 sentences. A (department store) can be busy.Logical formLearned from60 sentences. A (year round) can be busy.Logical formLearned from60 sentences. Environments can be busy.Logical formLearned from60 sentences. A (family life) can be busy.Logical formLearned from60 sentences. Women can be busy.Logical formLearned from60 sentences. A community can be busy.Logical formLearned from59 sentences. A friend can be busy.Logical formLearned from59 sentences.