28. There is no doubt you will be successful in time as long as you study hard.A. whether

发布时间：2020-08-16 06:07:38


28. There is no doubt      you will be successful in time as long as you study hard.
A. whether
B. if
C. that
D. What

网友回答

A. whether
B. if
(答案→)C. that
D. What
解析： 
以上问题属网友观点，不代表本站立场，仅供参考！