The old man sat in front of the televisi
问题:
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
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