Ответ на вопрос: 7. a) Read the box. Find examples of the verb ‘to be’ in the dialogue. b) Complete the sentences. Use ’m, ’s, ’re. 1 Susan ..... new to the school. 2 I ..... 14 years old. 3 They ..... in Room E. 4 He ..... my best friend. 5 You ..... in Grade 7. c) Rewrite sentences 1–5 in the negative.