4. We

6. save

8. should

10. energy

15. We should save energy

18. you

20. should not

22. throw away

24. my friend

27. You should not throw away my friend

29. very sad

31. about

33. that

35. we are

38. We are very sad about that

40. should

42. turn off

44. we

46. the light

49. We should turn off the light

51. recycle

53. should

55. we

57. them

60. We should recycle them

62. it

64. away

66. don’t

68. throw

71. Don’t throw it away

73. It’s

75. not

77. trash

79. because

82. Because it’s not trash

84. ?

86. ?

88. why

90. ?

93. Why???

95. it

97. off

99. you should

101. turn

104. You should turn it off

106. doing?

108. are

110. you

112. what

115. What are you doing?

117. clean

119. we

121. have to

123. up

126. We have to clean up

128. cans

130. put

132. here

134. the

137. Put the cans here

139. on

141. the

143. turn

145. lights

148. Turn on the lights