use|used|uses

我用不上船。

I'd have no ___use for a boat.

别把那块布扔了，总有一天你会找到它的用处的。

Don't throw that cloth away, you'll find a ___use for it one day.

淋浴比泡澡用水少。

Taking a shower ___uses less water than having a bath.

我没有多少钱，所以我总是买二手CD。

I don't have much money, so I always buy ___used CDs.

我过去个子很矮。

I ___used to be short.