问题
选择题
Mary had to go to a meeting,so she left her children _________ at home. [ ]
A. playing
B. played
C. to play
D. having played
答案
答案：A
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Mary had to go to a meeting,so she left her children _________ at home. [ ]
A. playing
B. played
C. to play
D. having played
答案：A