A (railway line) can be busy.Logical formLearned from28 sentences. An operation can be busy.Logical formLearned from28 sentences. A prime minister can be busy.Logical formLearned from28 sentences. Crews can be busy.Logical formLearned from28 sentences. (Shopping centers) can be busy.Logical formLearned from27 sentences. A library can be busy.Logical formLearned from27 sentences. (Market places) can be busy.Logical formLearned from27 sentences. Cops can be busy.Logical formLearned from27 sentences. A manager can be busy.Logical formLearned from27 sentences. A dad can be busy.Logical formLearned from27 sentences. A newsroom can be busy.Logical formLearned from27 sentences. (Border crossings) can be busy.Logical formLearned from27 sentences. A wife can be busy.Logical formLearned from27 sentences. Hours can be busy.Logical formLearned from27 sentences. Couples can be busy.Logical formLearned from27 sentences.