问题
选择题
How did you manage to get to school on time ______ you missed the school bus?
A．when
B．if
C．once
D．because
答案
答案：A
整个句子说得是过去的事，不表示假设，只要排除了once，if，答案就只有A了。
搜题请搜索小程序“爱下问搜题”
How did you manage to get to school on time ______ you missed the school bus?
A．when
B．if
C．once
D．because
答案：A
整个句子说得是过去的事，不表示假设，只要排除了once，if，答案就只有A了。