Select the most appropriate word to fill in the blank and make a meaningful sentence.

We try to keep abreast of the new treatments, but have gained little ________ experience of using them.

practical

The most appropriate word to fill in the blank is practical.

The word "practical" means useful or applicable to real life situations. It is the most appropriate word because it accurately describes the experience that the speaker has gained from using the new treatments. The speaker has gained some experience, but it is not enough to be truly practical.

The other options are not as appropriate.

• Systematic means done or arranged according to a plan or system. It does not make sense in the context of the sentence, because the speaker is not talking about the way that the treatments are arranged.
• Orderly means arranged in a neat and tidy way. It does not make sense in the context of the sentence, because the speaker is not talking about the way that the treatments are arranged.
• Doable means possible to do or achieve. It does not make sense in the context of the sentence, because the speaker is not talking about whether or not the treatments are possible to use.