我把房子从上到下搜了个遍，还是找不到它。

I've searched the house ___from ___top ___to ___bottom and still can't find it.

我们经常可以看到有人全身穿黑，从上到下，或者全身穿白。

Very often we can see someone in black, ___from ___top ___to ___bottom, or in white.

为了提高效率，这个组织需要从上到下进行改革。

The organization needs to be reformed ___from ___top ___to ___bottom to improve efficiency.