Surely the grace which enabled thee to sing praises under such suffering is all-sufficient grace.
你靠着恩典还能在受苦的牢狱中唱出赞美来。
2
To begin with, you must work hard at your lessons and be fully prepared before the exam. Without sufficient preparation, you can hardly expect to answer all the questions correctly.
首先，你必须努力学习功课，并在考试前做好充分的准备。没有充分的准备，很难正确回答所有的问题。
3
As in all friendship, a husband and wife must try to interest each other, and to spend sufficient time sharing absorbing activities to give them continuing common interests.