How does what’s it change in chapter 4

Which sentence best describes the biased way the author approaches this topic? boars = bacon. and gammon, chops, sausages and feel your salivary glands begin to tingle at the thought of your teeth sinking into that first tender mouthful, and you will be half way towards a sensible attitude towards these creatures. they’re pigs. porkers, hogs, swine, if you will. they dig up people’s gardens, occasionally attack their dogs, spread disease and generally cause a nuisance. in culinary terms, they’re no different to cows or sheep or any of the other feeble-minded, four-legged frolickers which, in various pasties, pies and other assorted pastry cases, end up on our steaming plates on a daily basis. low in fat but high in deliciousness, by eating a wild boar you aren’t depriving poor little peppa and george of a long-lost cousin, but rather reaffirming your god-given position at the top of the food chain. if a boar could eat you it would, thus i say we should return the favour with interest. so say no to the misty-eyed squealers and man up, tuck in and pig out!

Which would be the most credible source for researching the effects of smoking? letter from your grandfather web page about someone’s lung cancer report prepared by a tobacco company research article in a scientific journal

Used for an event that has been completed before the present moment in time. simple past past perfect perfect progressive past perfect progressive