21.2 Read the situations and write sentences with I think I'll... or I don't think I'll.... 1 It's a bit cold. The window is open and you decide to close it. You say: It's cold with the window open. I think I'll close it. 2 You are feeling tired and it's getting late. You decide to go to bed. You say: I'm tired, so ______ Goodnight! 3 The weather is nice and you need some exercise. You decide to go for a walk. You say: It's a lovely morning. ______ Do you want to come too? 4 You were going to have lunch. Now you decide you don't want to eat anything. You say: I don't feel hungry any more. ______ lunch. 5 You planned to go swimming today. Now you decide not to go. You say: I've got a lot to do, so ______ today.