помогите написать правильную форму глагола
Yesterday morning John and Sally (be) at home alone.They (heve) breakfast together. They (drink) their tea,(eat) some sandwiches and (begin) to clean the house. They (do) the house very well. John (take) a pen and (write): "Dear mum and dad. Sally and I (be) in the park. We"ll (be) back at 4 o" clock. Love. John,"