问题
选择题
his father has been away for more than one year, John can still keep doing what he needs to.
A．While
B．When
C．As
D．Whether
答案
答案：A
题目分析：句意：尽管他父亲已经离开一年多了，可John仍然能够继续做他需要做的事情。在所给的四个选项中只有while可以引导让步状语从句，故A正确。
考点: 考查状语从句的用法。