Tìm một số lẻ có 4 chữ số khác nhau trong đó số tạo bởi chữ số hàng chục và hàng đơn vị gấp 5 lần chữ số hàng nghìn và hàng trăm

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Sandwiches are common in many countries. But (29) _________ did this strange name come from? The Earl of Sandwich (1718 - 1792) was an Englishman. He liked playing cards. One night he played for hours and got very hungry, (30) _______ he didn’t want to stop his card game. He asked for some roast meat (31) _____ two pieces of bread. People bake roast meat in the oven or a stove). He ate the food (32) _______ he played cards. People gave his name (33) _______ this new kind of food. 25. A. what B. when C. where D. how 26. A. so B. although C. but D. because 27. A. for B. between C. on D. among 28. A. while B. until C. after D. before 29. A. to B. for C. from D. with Complete the sentence so it means the same as the sentence below. 30. They constructed many old temples last year. Many old temples____________________________________________________________ 31. The visitors like taking photos around Sword Lake. The visitors are interested_____________________________________________________ 32. He began collecting stamps five years ago. He has ___________________________________________________________________ 33. You should study the lesson carefully for the exams. You had____________________________________________________________________ 34. How many cups of coffee have you drunk today? How much _________________________________________________________________ 35. With luck, Jane will become the champion this year. If _____________________________________________________________________. 36. They don’t keep money in their houses. Money ____________________________________________________________________ 37. Anna started making model 12 years ago. Anna has………………………………………………………..……………………………… 38. Jane began learning Russian in 2012. (since) Jane has………………………………………………………………………..……………… 39. We started studying for the exam last month. (since) We have…………………………………………………………………………..…………… 40. He should see the doctor once a year. (had better) …………………………………………………………………………………………………