题目

Sam enjoys _________ stamps. And now he has 226 of them. A. to collect             B. collected                   C. collects                    D. collecting 答案：D   句意：萨姆喜欢集邮，现在他已经收集了226枚邮票。本题考查动词的-ing形式作宾语。enjoy后接动词的-ing形式作宾语。

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