My mother often spends 2 hours housework every day.A. doB. doesC. doingD. to do

问题补充：

My mother often spends 2 hours housework every day.

A. do

B. does

C. doing

D. to do

答案：

A. do

B. does

(答案→)C. doing

D. to do

解析：固定句型。spend+ time/ money (in) doing sth.或spend time/ money on sth.“花费时间做某事”。