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. 
#73998
A
when; how
B
how; when
C
how; how
D
why; why
推荐题目
They encouraged me _____________ again 
#69858
A
trying
B
tried
C
to try
D
have tried
Make marks _______ you have questions. 
#66894
A
which
B
in which
C
where
D
in where