Read and complete the dialogue. Use the phrases: Why don't we... Shall we, How about, Let's

- Why don\'t we go to the forest next weekend? I want to gather some mushrooms and berries.- It\'s a great idea! Shall we go there by bus, take tents and stay there for a night? I can take my guitar and we can play in the evening near the fireplace.- How about to go by car? I need to come back home in the evening, because I promised my mother to help her with some things at home. - Ok, let\'s go there on Saturday at six a.m. Please pick me up. And what time will we come back?- At 7 p.m, I think.- Ok, deal.