问题
选择题
The old man sat in front of the television every evening, happy ________ anything that happened to be on.[ ]
A. to watch
B. watching
C. watched
D. to have watched
答案
答案：A
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The old man sat in front of the television every evening, happy ________ anything that happened to be on.[ ]
A. to watch
B. watching
C. watched
D. to have watched
答案：A