问题
选择题
The boy was seen on the sports ground.
A．to play
B．play
C．played
D．to playing
答案
答案：A
看某人做某事强调结果用see sb do sth，在被动句中用to do，本题为被动句，故用to play，故本题选A。
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The boy was seen on the sports ground.
A．to play
B．play
C．played
D．to playing
答案：A
看某人做某事强调结果用see sb do sth，在被动句中用to do，本题为被动句，故用to play，故本题选A。