No one knows what effects the GM material might have ________the food chain.
82. When we heard the news that our team has won more than 30 gold medals Athena Olympic Games, we sang and danced _____ joy.
81. In order to finish the work in time,they always worked far______ the night.
80. Last week, we had a meeting. I told the chairman that I couldn’t attend it for I had something important to do, but he insisted _____ my being present.
79. I wrote to Mr. Green, _______ him _______ the lost case.
78. The form is very important. Please fill in the form _______ ink not _____ a pencil, Jack