3 Read the text and mark the sentences as T (true) or F (false). 1 Green roofs are a new idea. 2 A green roof always has flowers on it. 3 Green roofs make cities more attractive. 4 Green roofs are a kind of air-conditioner. 5 Sometimes animals and insects live on green roofs. 6 Green roofs are cheap to make. . . . . . . . . . . посчитайте >​