问题
选择题
(2013·河南省普通高中适应性检测卷一)People spend many years learning about favorite sports and ________ how to do them well.
A．practice
B．practiced
C．practicing
D．to practice
答案
答案：C
选C 考查非谓语动词。spend ... (in) doing sth.表示“花费……做某事”，根据and可知，空处应与learning并列，作省略了的介词in的宾语，故选C。