Which of the following words can be used as a verb ?

Which one is a verb? Which of the following word is 'verb'? 'Huffing and puffing, we arrived at the classroom door with only seven seconds to spare.' In this sentence the verb 'arrived' is- The old man was tired of walking.' Here 'walking' is a/an- What is the past participle form of put? He raised his hand. Here raised is a--verb. Which one is irregular verb ? Walking in the morning is good for health. Here 'walking' is a/an- The reading of history is interesting. এখানে 'reading' কী হিসেবে ব্যবহার হয়েছে? 'A lost opportunity never returns.' Here 'lost' is a –