Помогите раскрыть скобки употребив глагол в нужном времени и форме

Помогите раскрыть скобки употребив глагол в нужном времени и формеAn English farmer once (tell) his Friends what a wonderful echo he (have) on his farm. They (not believe) him, so the farmer (tell) them to come to his house on the following day. The next day they all (come) and the farmer (tell) his son to hide in the hollow of a tree and repeat his words. When they (arrive) at the spot, the farmer (shout) aloud, "You (be) there, Pat ?" -"Yes, sure, I (be) and I (wait) For you quite a long time," (be) the startling reply.