The children,（ ）, were allowed to leave the table.
A、
to eat their fill
B、
had eaten the fill
C、
having eaten their fill
D、
have been eaten their fill
【正确答案】：C
【题目解析】：
因为原句中有were allowed（谓语动词），又没有连词，说明空格处应该填非谓语，不选BD，这里吃饱这个动作发生在离开桌子之前，选C。句意：孩子们吃饱了之后，才被允许离开桌子。