1—5 CBCAB

6—10 CBACA

11—15 ABBAC

16. seven days17. Size 18. pretty

19. Reasons 20. 2 weeks

21—25 CBCDC

26—30 ABACD

31—35 ABADB

36—40 ADBCC

41—45 ADBBA

46—47 DC

48. an 49. two 50. next

51. why 52. One 53. but

54. I 55. to

56—60 BADBC

61—65 BAADC

66—70 DCAAC

71. informative resources

72. do school work

73. is interested in

74. specific school activities

75. enabling one

76. without an account

77. Art sites

78. Upload art pieces

79. Enjoy art projects

80. well-rounded and informed

81. She had a quarrel with her husband.

82. She failed to jog to the end ot the street.

83. No one would be disappointed or even know.

84. Running makes her feel good while jogging makes her look good.

A drop of water is only a drop of water, but when a great many drops of water join together a river will come into being. And when rivers come together they will form a sea.

As is in the same way, a tree is only a tree, many trees, however, will become a wood. And when several woods lie one by one, they will be called a forest. As is known to everyone, a forest is a home for all kinds of animals and plants.

From the above, we can understand that one person can not do many things. But when many people come together, they can form a society. In a society, people are related to one another, help one another. In this way, we can make a harmonious society in which we can live a happy life.