the old lady's hand shook frequently.She explained to her doctor_____this shaking had begun half a

Question

the old lady's hand shook frequently.She explained to her doctor_____this shaking had begun half a year before, and ____,only because of this ,she had been forced to give up her job.

a.when ,how
b.how,when
c.how,how
d.why ,why

Answer 1

C
分析：首先第一个空是一个宾语从句，分析宾语从句从三点基本知识点考虑：引导词，语序和时态。这里考引导词。而第一个空后面用了完成时，而完成时决不能和when连用（后面的空也是完成时），排除A B。再看D，看医生就是找手发抖的原因的，如果她能解释原因还用得着看医生么。排除D
综上所述，选C最好！

Answer 2

D

Answer 3

c

Answer 4

b