问题详情

A doctor was once teaching a 【C1】______ of medical students at a famous university in Edinburgh. An injured man was 【C2】______ in, and the doctor turned to 【C3】______ of the students and asked him, "What"s 【C4】______ with this man？"
"I don"t know, sir," the students answered. "Shall I examine him and 【C5】______ out？" "There is no 【C6】______ to examine him," said the doctor.
"You 【C7】______ know without asking questions. He had 【C8】______ his right knee. Don"t you notice the 【C9】______ he walked？ He hurt it by 【C10】______ it in the fire. You see his trouser leg is burnt away at the 【C11】______ . This is Monday morning. Yesterday was 【C12】______ , but on Saturday the roads were 【C13】______ and muddy. The man"s trousers are muddy all over. The man fell down on Saturday 【C14】______ . "
The doctor then turned to the man and said, "You 【C15】______ your wages on Saturday and went to a public house and drank too much. You 【C16】______ wet and muddy on the way 【C17】______ . You tried to dry your clothes 【C18】______ the fire when you got home. 【C19】______ you had drunk too much, you 【C20】______ on the fire and burnt your knee. Is that right？"
"Yes, sir," said the man.
【C1】______
A．part
B．class
C．pair
D．few请帮忙给出正确答案和分析，谢谢！