问题
选择题
Millie is getting on well with her friends but she is a little selfish _____.
A．in time
B．on time
C．at times
D．at a time
答案
答案：C
题目分析：句意：Millie正和他的朋友们相处得很好，但是她有时还是有点自私。A. in time 及时 B. on time 按时 C. at times 有时相当于sometimes D. at a time作“一次，每次”讲，常用于“数词+at a time”的结构中.根据题意故选C