my mother is watching tv at home now.(改为现在完成时)my mother ____ ____ tv at home for twenty

问题描述:

my mother is watching tv at home now.(改为现在完成时)my mother ____ ____ tv at home for twenty
minutes
这里只有两个空格

My mother (has watched ) tv at home for twenty minutes.这里只有两个空格所以答案就是 has watched