They began to climbed the mountain after they had bought all the food and drink.改为否定句
题目
They began to climbed the mountain after they had bought all the food and drink.改为否定句
答案
They didn't begin to climb the moutain until they bought all the food and drink.
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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