Pupils can be busy.Logical formLearned from10 sentences. A female can be busy with projects.Logical formLearned from10 sentences. A showroom can be busy.Logical formLearned from10 sentences. A line can be busy.Logical formLearned from10 sentences. A bumblebee can be busy.Logical formLearned from10 sentences. Situations can be busy.Logical formLearned from10 sentences. Guests can be busy.Logical formLearned from10 sentences. Canals can be busy.Logical formLearned from10 sentences. Builders can be busy.Logical formLearned from10 sentences. An (air traffic) can be busy.Logical formLearned from10 sentences. An (afternoon rush hour) can be busy.Logical formLearned from10 sentences. An underpass can be busy.Logical formLearned from10 sentences. A partner can be busy.Logical formLearned from10 sentences. Telephones may ring busy.Logical formLearned from10 sentences. A (border post) can be busy.Logical formLearned from10 sentences.