80. careful => carefully
81. turn on => turning on
82. go to camping => going camping
83. next day => the next day
84. lied in => was lying in
85. more than => to
86. have done => had done
87. helping => to help
88. keeping => be kept
89. know => known
90. times => time
91. would => will
92. beautiful => beautifully
93. C. am => were
94. A. going => to go
95. B. do => doing
96. B. to take => taking
97. C. can => could
98. C. there's => there're
99. B. go => going
100. B. going => to ho
101. B. are => is
102. C. more easy => easier
103. D. for => since
104. B. am => are
105. A. what did happen => what happened
106. C. most great => greatest
107. A. telling and listen => telling and listening
108. B. problem => problems
109. A. was => has been
110. C. with => as
111. B. with => from
112. C. will lose => lose
113. has => have
114. D. interesting => interested
115. B. to live => to living
116. B. don't => didn't
117. B. attend => attending
