The reason__________ their failure you know is _____they didn't get fully prepared for the experiment.
A. why.., that B. that.., why
C. for.., that D. why.., because
The reason__________ their failure you know is _____they didn't get fully prepared for the experiment.
A. why.., that B. that.., why
C. for.., that D. why.., because
C
此题关键是their failure为名词词组,A项why后须接句子。