4 V 2 * Choose the correct verb in brackets and complete the text with affirmative and negative forms of could, can and will be able to. 1 Advances in Medical Science Two hundred years ago, medical science was very basic and doctors could perform (perform / suffer) only simple operations. They (cut/use) X-rays to see inside their patients until about 100 years ago. Doctors ? (cure / cause) most infections until the discovery of penicillin in 1928. Recently, there have been incredible advances in medical science. Scientists (experiment / clone) animals these days, but they (clone / prevent) humans yet. In the future, doctors 5 (operate / discover) on people using nanobots. People 6 – (sleep/live) longer, perhaps 150 years, but we? (live/transplant) forever!

How to build your life to remain a real man? such questions always make me to reflect . different people consider the word " a real man" in different ways . as for me , to build my life and to remain a real man means to have my own opinion on each situation but not to offend anyone . it is not an easy task not to cross this line and not to look in the eyes of others as upstart . i don't like to hurt somebody even when they tell me something unpleasant . i don't reply in response .i do so not because i am afraid of them or i am flabby but to offend somebody by telling unpleasant words will hurt me more . i don't like to feel negative emotions even more so to make somebody upset or cry . i know it is difficult but your negative reaction and negative emotions will hurt you too. build your life and remain a real man ! who never gossips behind people's back , who never envies , who never wants to hurt somebody's feelings. try to be such kind of man and the name of a real man will be given to you by people .