Поставьте глаголы в нужном грамматическом времени и обязательно напишите объяснение почему именно так 1. I hope they ... (build) this bridge by the end of the year. 2. What... you ... (do) by the time I come back? 3. By the end of this year Mr. Brown ... (work) for this company for fifty years. 4. They ... (pick) all the harvest by the end of September. 5 your guests ... (come) by five?