The old lady’s hand shook frequently. She explained to her doctor this shaking h
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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 |
试题答案
C
解析