কোনটি Adjective?

"Live is a walking shadow" Here the underlined word is a/an- The old man died penniless. Here the underlined word is a/an- The word 'vital' is __ Select the sentence is which 'down' is an adjective: Examinations are frightening." Here 'Frightening' is 'sea' শব্দটির adjective হচ্ছে --- Adjective of the word 'trouble' is--- The word 'vital' is a/an- Mr. Rohan is very friendly. Here 'friendly' is- 'Please write to me at the above address. The word 'above' in this sentence in a/an -