A young man was called up for army service and had to go to be medically examined. The doc

A young man was called up for army service and had to go to be medically examined. The doctor 【21】______ at a desk when he went 【22】______ He said to the man, "Take your coat and shirt off, loosen(松开)your belt and sit on 【23】______ chair."

The young man did 【24】______ The doctor looked 【25】______ him for a moment without getting 【26】______ from his chair and then said, “All right. 【27】______ your clothes again” “ 【28】______ you haven" t examined me at 【29】______ !" the young man said in a troubled 【30】______ . “It isn"t 【31】______ ,” the doctor said gently.” 【32】______ I told you to take your coat and shirt off, you 【33】______ me all right, so you aren"t 【34】______ .You saw the chair I pointed 【35】______ , so your eyesight" s good enough 【36】______ the army. You 【37】______ to take your clothes off and to sit on the chair, so your body 【38】______ be healthy, and you understood 【39】______ I told you to do and did it without a 【40】______ , so you must possess enough intelligence (智力) for the army."

【21】

A．is sitting

B．was sitting

C．sat

D．sits