My cousin about an hour her homework.A. spend doB. spends doC. spend doingD. spends do

问题补充：

My cousin about an hour her homework.

A. spend, do

B. spends, do

C. spend, doing

D. spends, doing

答案：

A. spend, do

B. spends, do

C. spend, doing

(答案→)D. spends, doing

解析：本题的主语为单数第三人称，故用spends，花费某人多长时间做某事可以说spend sb+时间+doing，故本题选D。