问题
He used to travel far and________, so he got ________ on geography.
A:wide; a number of knowledges
B:wide; a great deal of knowledge
C:widely; a large number of knowledges
D:widely; a good deal of knowledge;
B:wide; a great deal of knowledge
C:widely; a large number of knowledges
D:widely; a good deal of knowledge;
正确答案是：
