69. Acting has brought me some enormous ………………….. (enjoy)
70. He has had treatment for 2 months now without any ……………………… (improve)
71. You can ask that plumber for ………………on how to repair the racks in water pipes. (advise)
72. Rather ………………… researchers forecast that oil might run out in 30 years. (pessimism)
73. A complaint letter should be ended …………………… (impolite)
74. The drivers have left lots of garbage on the ground after their ………………… (refresh)
75. I think careless drivers should be fined …………………… (heavy)
76. Travelling to the countryside is becoming …………………….. popular nowadays. (increase)
77. …………………… are looking for an effective way to reduce energy consumption. (science)
78. What we must do is to keep the earth ……………………… (pollute)
79. We must use electricity ……………………… (economy)
80. ……………. energy is the best alternative source of energy. (sun)
=>
69. Enjoyments
70. Improvements
71. Advice
72. Pessimistic
73. Politely
74. Refreshment
75. Heavily
76. Increasingly
77. Scientists
78. Unpolluted
79. Economically
80. Solar
69: enjoyments
70: improvements
71: advice
72: pessimistic
73: politely
74: refresher
75: heavily
76: increasingly
77: scientists
78: unpolluted
79: economically
80: solar