.I fell down and broke three of my teeth. I wonder how many times I have to come here and

问题补充：

.I fell down and broke three of my teeth. I wonder how many times I have to come here and get my false teeth .

A. fix

B. fixing

C. fixed

D. to fix

答案：

A. fix

B. fixing

(答案→)C. fixed

D. to fix

解析：考查非谓语动词，此题的结构为get sth done，根据语境使假齿被安装上，所以用过去分词作宾补，选C。