有定义语句：int x, y;，若要通过scanf("%d,%d",&x,&y);语句使变量x得到数值11，变量y得到数值12，下面四组输入形式中，错误的是（ ）。

A．11 12<回车>

B．11, 12<回车>

C．11,12<回车>

D．11,<回车>12<回车>

The flowers were so lovely that they __________ in no time.

A．sold

B．had been sold

C．were sold

D．would sel