I.

26. B    

27. C    

28. B    

29. C    

30. A

II.

1. learning    

2. are    

3. of    

4. you    

5. how

6. book    

7. fly    

8. yourself    

9. playing    

10. practice

Part D

I.

1. It’s very important to keep the environment clean

2. The time machine will be shown to the public when they finish it

3. He was delighted that he received his aunt's letter

4. People recycle old car tires to make shoes and sandals

5. I'm very sad not to be accepted in that group

II.

1. Minh has collected stamps since he was a child

2.  I am working tomorrow, so we can not go somewhere

3. They are going back to England in two months

4.  TV is bringing not only information but also entertainment

5.  At home on the farm life is always a struggle with nature

I.

76. to listen → listen

77. care → carelessly

78.will Ba have → Ba will have

79. happily → happy

80. students → student

II.

81. What's the matter with this TV?

82. Hoa and Minh were absent from class yesterday because of illness

83. Nam can't swim so well as Binh

84. What is the width of the stadium?

85. We will have a five-day tour in Sa pa

86. Is that the best you can do?

87. Students don't need to wear uniform on Wednesday

88. Watching TV makes her comfortable

89. It took us whole day to look for these old pictures 

90. How far is it from your house to your school?

#No_copy

#Cow_deeptry