______ giving up, he went on with his research,got his PhD and married the girl.
In a debate, you have to be clear of the ______ of the disabled children.
I’ve tried my best and done quite well, but he ___________ faults with me.
--- Ought we _____ clean the class room today? --- Yes, you _____.
We won’t give up _____ we should fail ten time.
May I go with my friends to the harvest festival? ______________.