My sister always ----- her homework at home.a.do b.does
问题描述:
My sister always ----- her homework at home.a.do b.does
答
B
答
b
动词用第三人称现在时
答
my sister always does`````
楼主记住she/he是第三人称
所以要用 does、
ps 除了情态动词 如 can may must等等
还有,to