1) 1 You are an engineer. Are you an engineer?You aren`t an engineer.2 He will be a student next year.Will he be a student next year?He won`t be a student next year.3 They had a big house in the country.Did they have a big house in the country?They didn`t have a big house in the country.4 It often snows in winter.Does it snow in Winter?It often doesn`t snows in winter.2) 1 All the students will be present today.2 Yesterday we had two lectures.3 There was a letter for him on the table.4 My friend was a mathematics teacher at school last year.5 He will be a pilot when he grows up.