I usually end up()at my computer or checking my email instead of doing my work.

科目名称：理工英语3

试卷号：11377

题型：词汇与结构(单选题)

题目：I usually end up()at my computer or checking my email instead of doing my work.

选项：A. to stare B. stare C. staring

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答案：C. staring