________ all the homework assigned by the school, the students have to work at it till midnight.
Maintaining(维持) peace and stability of the South China Sea and the East China Sea will certainly ____ a more promising Asian-Pacific area.
---I’m afraid this question is beyond me. ---______. Tell me what you think. There’s no wrong answer.
He _____ to participate in the school debate, but on second thoughts, he gave up the idea.
Miss Green won’t be available at 9 tomorrow morning, for she ____ a speech at that time.
Sometimes to get out of difficulty, one must change his way of thinking, or simply change his ____ towards a problem.