а) Взгляни на заголовок, и на картину. Что значит выражение eco-helpers?

а) Взгляни на заголовок, и на картинку. Что означает выражение eco-helpers? Послушай, прочитай и проверь. Dave: Hi Tim. Whats up? Tim: Oh, hi Dave! What are you doing here? Dave: Oh, Ive joined the Eco-helpers club. Tim: Oh yeah, Ive heard about that. Sally collects rubbish for recycling in the park every Saturday morning, doesnt she? Dave: Thats right. Shes been doing that for a month. Ive been building nesting boxes. Tim: Nesting boxes? Dave: Well, there arent many trees left in the city I for birds to build their nests. If we dont help them, they will have to leave the city. Tim: Thats interesting. What else have you been doing? Dave: Weve been planting trees and cleaning out ponds for a week now that the weathers good. Tim: Your club sounds wonderful. I could join as well, couldnt I? Dave: Of course you could. We really need volunteers, but you have to see Miss Jackson first. Shell tell you what to do. Tim: Sounds great! Ill join first thing Monday morning. b) Прочитай диалог и дополни предложения. Потом объясни выделенные слова. 1 Sally ... for a month. 2 Daves been ... 3 The birds will leave the city if ... 4 Tim wants to ... on Monday morning.