问题
选择题
Tina often helps her mother____at home on weekends. [ ]
A. do homework
B. doing housework
C. does homework
D. to do housework
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Tina often helps her mother____at home on weekends. [ ]
A. do homework
B. doing housework
C. does homework
D. to do housework
答案：D