Раскройте скобки, поставив глаголы в фоpму past continuous. while i (to copy) the exercise, my friends (to describe) a picture. when we came in, the children (to clean) their desks. we met her at the bus stop. she (to wait) for the bus. some of the children (to ski) while other children (to skate). everybody (to have) a lot of fun. when we came the family (to get) everything ready for christmas. bob and helen (to decorate) the christmas tree. the girls (to feed) the birds in the garden while the boys (to make) a bird-house.