• Identify the lexical word class of the underlined words below.1a I was flat on my back.back = noun1b I already told him to back off. fC0NV}back= verb2a It’s pretty hard to do that.2b I felt like I was pretty .3a Actually, it’s fun to horse around with danger.3b He is quite handy on a horse.4a His ability to abstract and formulate higher-level logical categories of thought willalso be compromised.4b The abstract usually includes themajor objectives of the proposal.4c At the end of the journey is an abstract sculpture of the universe.5a I go fast because I want to get back quick.5b By early September it seemed that the fast might go on indefinitely.5c I’m normally a fast learner. ‹NEWs