Куда и какие предлоги надо вставить ? помогите пожалуйста мне очень срочно! предлоги: with , am,is,are. 1.What_you doing?-arranging a surprise for Ann. 2.We_ writing a presentation of our project.I`ll phone you later. 3.Mam_making a Christmas cake in the kitchen.Will you help her? 4.Who_playing the piano?-Jim Smith,a young talented pianist. 5.Why_the children laughing?-I don`t know.Let`s ask them.