问题
选择题
You should give up _____ on the computer for so long a time. It's harmful to your health. [ ]
A. play
B. to play
C. playing
D. plays
答案
C
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You should give up _____ on the computer for so long a time. It's harmful to your health. [ ]
A. play
B. to play
C. playing
D. plays
C
