问题补充：
I recognized her as soon as I met her at the airport though we hadn’t seen each other for ages and she had changed .
A. a large amount
B. a great many
C. a great deal
D. a great deal of
答案：
A. a large amount
B. a great many
(答案→)C. a great deal
D. a great deal of
解析：句意：在机场我一看到她就认出了她，虽然我们好多年没见面了并且她改变了许多。a great deal 在这里为副词，许多，非常之意。a great many修饰可数名词复数，a great deal of 修饰不可数名词。所以选C。
