单项选择题
The Englishman has a very good ear ______ music. You can ask him for some advice.
单项选择题 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.
单项选择题 All the students envied him ______ having succeeded in the TOFEL test.
单项选择题 Can you tell me the difference ______ the two words
