第11题: [单项选择]Sam did nothing else than ______ when he saw the old lady fell down on the ground. A. stand by B. standing by C. stood by D. stood up 参考答案:A 答案解析:[精解] 固定搭配题。"do nothing else than do something"结构,意思为只做什么,than后面的动词不定式通常不带to,如:He could do nothing el