A (trading center) can be busy.Logical formLearned from12 sentences. A series can be busy.Logical formLearned from12 sentences. (Government officials) can be busy.Logical formLearned from12 sentences. Programmers can be busy.Logical formLearned from12 sentences. A type can be busy.Logical formLearned from12 sentences. A college can be busy.Logical formLearned from12 sentences. A (time period) can be busy.Logical formLearned from12 sentences. An airfield can be busy.Logical formLearned from12 sentences. An audience can be busy.Logical formLearned from12 sentences. Shops can be busy.Logical formLearned from12 sentences. Arrangements can be busy.Logical formLearned from12 sentences. Busy hours may pertain-to a day.Logical formLearned from12 sentences. A destination can be busy.Logical formLearned from12 sentences. A consumer can be busy.Logical formLearned from12 sentences. Buddies can be busy.Logical formLearned from12 sentences.