蛋糕配方需要六又二分之一杯面粉。

The cake recipe calls for ___six-and-a-half cups of flour.

这只狗六岁半了，仍然精力充沛。

The dog is ___six-and-a-half and still full of energy.

这双鞋我穿六码半刚刚好。

These shoes fit me perfectly in ___size six-and-a-half.