15%

sai rồi, phải là:

Because of her wealth, Hoa could buy that house.

như thế này mới đúng này

33. "I'll come and see you as soon as I can," he/she said.
34. My teacher said, "You should practice speaking English everyday."
35. She told her son, "Go straight upstairs and get into bed."
36. The lifeguard said, "Don't swim out too far, boys."
37. He asked Huong, "Could you give me a hand, please?"
38. The traffic police said, "Show me your driving license, please."
39. Nien asked Hoa, "Do you have many new friends?"
40. They told us, "You must go now."
41. I asked Nam, "Are you free tonight?"
42. The visitors asked, "Can we take photos?"
43. She asked, "Do you know the way to the station?"
44. "Will I finish my exercise at home?" he/she asked.
45. She asked Minh, "Can you speak Chinese?"
46. The girl asked, "How old is your grandparent?"
47. They asked, "Who are you going with tomorrow?"
48. I asked Tam, "Do you want to visit the Great Wall in China?"
49. I asked the tourist, "Are you from Canada?"
50. I told Lan, "Send me a postcard when you arrive in Paris."
51. Thu asked Hoa, "Why is she crying?"
52. Mrs. Ly asked, "When do your children go swimming?"

\(\dfrac{20}{3}\)

8

 4000.

47. (-12)-71.(-106)+72.59

=-564+7526+4248

=6962+4248

=11210

Gọi số học sinh là $x$ (học sinh).

Chia 5 cái trên 1 em thì tổng số kẹo là: 5$x$ + 1 (cái kẹo)

Chia 6 cái trên 1 em thì tổng số kẹo là: 6($x$ -1)  = 6$x$ - 6 (cái kẹo)

Vì tổng số kẹo luôn không đổi nên ta có phương trình là:

                   5$x$ + 1 = 6$x$ - 6 

                           6$x$ - 5$x$ = 1 + 6

                                     $x$ = 7

Số học sinh là 7học sinh , số kẹo là 7 x 5 + 1 = 36 (cái kẹo)

a, Góc vuông có trên hình là: góc ABC; góc BCD 

b, Các cặp canh song song có trong hình là: AB // CD