The boy writes well. Here well is a/an

Please look above. Here above is - The adjective took place long ago. Here the word 'ago' is a/an- Which word is not an adverb? The sun went down. The underlined word is used here as a/an: The bird flew high. Here, the word 'high' is a/an- 'Man cannot live alone'. The word 'alone' is used here as- An adverb does not modify - 'I will do it tomorrow'- এ বাক্যে Tomorrow কোন Parts of Speech? The dog was running behind. The underlined word is He runs fast, here 'fast' is .....