Hi,
Despite being a native speaker of English I often use the excellent grammar-monster website or Craig's entertaining book to check my facts. I wanted to check my understanding that 'However' is an adverb (degree) and suggest that the Adverb Test on the web site http://grammar-monster.com/lessons/adverbs.htm be modified to include 'however' as a correct answer - or a note to explain it is also an adverb but not the focus of that particular test.
Many thanks,
Chris.