Sentence:  Since attack serves to stimulate interest in broadcasts , I <WSD>added</WSD> to my opening statement a sentence in which I claimed that German youth seemed to lack the enthusiasm which is a necessary ingredient of anger , and might be classified as uninterested and bored rather than angry . 
Meaning of the word marked with <WSD> tags:  make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of