I’d like to know______ ______ ______ ______ _______ _______ these materials.(我想知道这些材料能作什么用.)

问题描述:

I’d like to know______ ______ ______ ______ _______ _______ these materials.(我想知道这些材料能作什么用.)

I’d like to know what things could be done by these materials.