题目内容

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; howB.how; whenC.how; howD.why; why
C
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.
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