3 Complete the sentences. ► My brother arrived out of the blue . 1 Do you understand? ~ Yes, sort____. 2 I don’t know exactly where she lives, but I have a ____ idea. 3 Could you get some of that organic ____ the children like to drink? 4 ‘Keep an eye on something’ is quite a common ____ in English. 5 I offered him a lot of money but he still ____ it down. 6 The walls are ____ of green, but it's not a strong colour; it’s quite ____.