问题
ys, sending e-mails to each other has become a way _____ what they think to others.
A:many a student expresses
B:in which more than one student express
C:that most of students express
D:the majority of students expresses;
B:in which more than one student express
C:that most of students express
D:the majority of students expresses;
正确答案是：
