问题

Mary had to go to a meeting,so she left her children _________ at home. [ ]

A: playing
B: played
C: to play
D: having played

正确答案是：

同类题型

So______ that most parents are too worried to let their kids travel alone at the beginning of the new term.

How often do you do sports-I do sports /twars/a day.

Could you please tell me —-About twenty minutes ago.

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______is it from your home to the nearest shopping mall—About ten minutes’ bus ride.