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27. You should go to The White Cave. It's really beautiful. 28. We can go camping inside the cave. There are tents at the store near the cave. 29. We can't go fishing here. The sign says "No swimming or fishing." 30. We shouldn't go rafting today. The weather's bad. 31. You shouldn't bring the campsite. The weather's bad. 32. We need to bring flashlights, so we can see at night. 33. We should bring jackets, so we don't get cold. 34. They don't have water at the campsite, so you should bring some bottled water. 35. We are going hiking, so you need to bring some boots. 36. You need to bring some food, so you can eat lunch. 37. You should take some books so you can read at night. 38-43: In the future, automatic food machines might cook all our food; robots might do all our housework; we might watch movies on smart walls; 3D printers might make all kinds of things; we might have any smart devices; robot drones might deliver all our groceries. 44: C) sleeping bag 45: D) Spacesuit 46: A) might make 47: A) will 48: B) space station 49: A) We can go hiking there 50: A) mountain 51: B) waterfall 52: B) waterfall 53: C) sunglasses 54: B) flashlight 55: A) should 56: D) beaches 57: A) shouldn't 58: B) the/ the 59: C) should 60: C) a/ a 61: B)a/ the 62:D )so 63:B )in/on 64:C )should 65:A and