81. Nowadays many high school students ________________ listening to popular music.
82. Don’t waste resources _________________ water and electricity.
83. British English _____________ American English in some ways.
84. They had to put off the sports meeting __________________ the heavy rain.
85. Since I __________________ college, I have been teaching English in the school.
86. Once you have decided to do something, don’t ________________ easily. Just go ahead.
87. The little hero would rather die than ______________ to the enemy..
88. When I was reading an English article, I always ______________ the English-Chinese dictionary.
89. My holiday is _______________ and I must go back to work tomorrow.
90. How is he _______________ his new classmates?