问题
What were you and your cousin doing at this time yesterday— He was reading a magazine ________ I was writing an e-mail.
A:The more careful; the best
B:The more carefully; the better
C:More carefully; better
D:The more careful; the better;
B:The more carefully; the better
C:More carefully; better
D:The more careful; the better;
正确答案是：
