The old lady’s hand shook frequently. She explained to her doctor this shaking had began half a year before, and , only because of this, she had to give up her job.
A. when; how
B. how; when
C. how; how
D. why; why
网友回答
A. when; how
B. how; when
(答案→)C. how; how
D. why; why
解析：考查宾语从句连词。句意：这个老妇人的手颤抖的很频繁，她给她的医生解释这种抖动在半年前是怎样开始的，并且她是怎样因为这个，被迫放弃她的工作的。这样的话，两个空都是怎样，如何，所以是how.