摘要： All of the classmates went to the park Lewis. He had to look after his weak mother at home. A. only B. beside C. besides D. except 答案:D 解题点拨:except意为“除--之外 .后面接的内容属例外情况.即不在所说的范围之内.besides也有“除--之外 之意.但其后所接的内容包括在所说的范围之内.

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