It takes us about an hour our homework every day.A. doB. doingC. to doD. did

问题补充：

It takes us about an hour our homework every day.

A. do

B. doing

C. to do

D. did

答案：

A. do

B. doing

(答案→)C. to do

D. did

解析：句意：我们每天做作业要花费大约一个小时左右。It takes sb some time to do sth意为“花费某人多少时间做某事”；故选C。