The most important _____ of his speech was that we should all work whole-heartedly for the people.
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
77. Oh, sorry. A lighted cigarette burned a hole _____ my coat, and I have to change another one.