Which one of the following is an adverb ?

'I will do it tomorrow'- এ বাক্যে Tomorrow কোন Parts of Speech? 'It's too soon to say if he'll survive' Here 'too' is a/an- The pogramme was broadcast live. Here 'live' is_ We watched as the sun went down. Here, 'down' is used as a/an - Suddenly one of the wheels came off, এখানে off শব্দটি- The adjective took place long ago. Here the word 'ago' is a/an- The up train is late. এখানে 'up' শব্দটি- Down went the Titanic. The word 'down' is- An adverb does not modify - The day of my sister's marriage is drawing near'. The underlined word is a/an -