[填空题]One of his classmates broke the window．
The window ______ one of his classmates．

Robert Beckett, who broke his leg and had to have it set at the local hospital, was given something to put him to sleep while this rather painful process was going on. All he remembered afterward was that a white-coated man made a prick in his arm—the body hardly felt it—and then sat down beside him and asked him to count slowly to ten. (46) (47) While Robert was couting, the anaesthetist was pressing the plunger of the syringe and injecting into his arm a small amount of liquid that looked like water. The liquid was not water, but a solution containing a drug that was powerful enough to put Robert to sleep and keep him there while his leg was being set. The same drug would not have been powerful enough to keep Robert unconscious had he required serious surgery. For operations where the patient must remain unconscious for an hour or more, the anaesthetist must administer the right amount of anesthetic continuously. (48)