Correct each word in bold for spelling and each underlined word for grammar. Write the correct word in the relevant box.
Operations were so dangerous 150 years ago that most people did not survive. Shock was a big killer, so (1) fysicians gave their patients anaesthetics to numb the pain, such as wine and laughing gas!
Though (2) eefeetive, patients still died. Scottish (3) surgen Joseph Lister realized that germs (4) are the problem. After he had ordered everything (5) include the doctors, must be kept (6) absolootly clean, fewer people died.
Another major breakthrough came with the (7) innishial use of the heart-lung machine in 1953. A heart (8) can be stopped while the machine took over, (9) give doctors time to operate. In the 1960s, doctors (10) begin transplanting hearts and other organs.
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