33. We shouldn't use electricity too much
34. I will discover the Sahara desert if I have a chance
35. There are six continents in the world
36. It is the most famous tower in England
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37. The Sahara is the hottest deserts in the world
38. Unless we don't stay at home, we will miss the show
39. The children enjoy watching dragon dance in the street at Tet
40. I haven't seen Mai- my best friend for two years
