短文改错

I passed all the other course that I took at my university, but I could 76. _______________

never pass botany. This was why all botany students had to spend       77. _______________

several hours a week in a lab look through a microscope at plant  78. _______________

cells, and I could never see through a microscope. This was used to    79. _______________

make my professor angry. “I can’t see everything, ” I said. Then  80. _______________

he began patient enough to explain how to see through it, but I still   81. _______________

couldn’t make it. At last we tried it with every adjustment of the 82. _______________

microscope known to man. With my pleasure, I saw something   83. _______________

and drew it quickly on the paper. “What’s that?” my professor asked.

“That’s what I saw.” I answered. “No, you don’t!” he shouted,   84. _______________

and he bent over and looking into the microscope. “That’s your   85. _______________

eyes! You’ve fixed the lens so that it reflects! You’ve drawn your eyes!”

答案：

76．course→courses    77．why→because    78．look→looking    79．去掉was    80．everything→anything

81．patient→patiently     82．√     83．With→To     84．don't→didn’t     85．looking→looked