Once _____ of the necessity of a move,he worked hard to find

Once _____ of the necessity of a move,he worked hard to find once ( ) of the necessity of a move,he worked hard to find a 帮忙做一道先择题关于once （） of the necessity of a move he worked hard,so he worked out of the difficlt problems.同义句 Once a bad _____,you will find it very hard to give it. 阅读理解Mr.Clark was a very busy man.He always worked hard.He of the reason for his success is _____ he worked hard 改写句子 He worked hard in order to pass the test.He worked hard the signs of times point to the necessity of the modifiction On the _____ of the theory he worked out the problem. What is the necessity of low carbon Necessity is the mother of invention