Zad 2 /25 English Plus 4 Chose th ecorrect verb in brackets and complete the text with affrimative and negative forms of could,can and will be able to Two hundret years ago,medical science was very basic and doctors .........(perform/suffer)only simple operations.They .......... (cut/use) X-rays to see inside their patiens untill about 100 years ago.Doctors ....(cure/cause) most infections untill the discovery of penicillin in 1928 Recently,there have been incredible advance in medical science .Scientists.....(experimeny/clone) animals these days but they .....(clone/prevent) humans yet. In the future,doctors .......(operate/discover) on people using nanobots.People .......(sleep/live)longer perhaps 150 years but we ......(live/transplat) forever!
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- were able to perform
- couldn't use
- couldn't cure
- can clone
- can't clone
- will be able to operate
- could live
- won't be able to live