问题
单项选择题
One morning my patience was growing thin during Mark talked once too often, and then I made a novice-teacher's mistake.
A．when
B．as
C．while
D．whenever
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
One morning my patience was growing thin during Mark talked once too often, and then I made a novice-teacher's mistake.
A．when
B．as
C．while
D．whenever
参考答案：A