单项选择题
A.is changing B.has been changed C.will have changed D.will change
Professor White contributed a lot to our community,（）A....
单项选择题Professor White contributed a lot to our community,（）
A.teaching, writing, and lecturing B.teaching, writing, and a lecturer C.a teacher, a writer, and lecturing D.teaching, lecturing, and a writer
Professor Smith promised to look（）my paper, that is, to...
单项选择题Professor Smith promised to look（）my paper, that is, to read it carefully before the thesis defense.
A.after B.over C.on D.into
Pleased to meet you! ―（）A.Pleased to meet you ,too.B.Ho...
单项选择题Pleased to meet you! ―（）
A.Pleased to meet you ,too. B.How do you do? C.I've heard about you. D.The pleasure is mine
