شرکت در آزمون آنلاین
                            انگلیسی 3
                            -
                            درس اول
                             | آزمون شماره 10776
                        
                    Many years ago, famous doctors and scientists couldn't find a ……… for smallpox (kind of disease).
Look , I've had enough of this . It's your ............................. ! Either she leaves here or I will !