问题补充：
With the help of the new teacher, number of the students in my class who have made great progress in English up to now is far larger.
A. the; the
B. a ; a
C. the ; /
D. a ; /
答案：
A. the; the
B. a ; a
(答案→)C. the ; /
D. a ; /
解析：考查冠词。根据句意第一空是固定词组the number of…。。的数量；第二空后的progress是一个不可数名词。即使前面有形容词，也不要用a或者an.
