因此他不得不在家照看他.so he _____ _____ _____ _____ him at home.
问题描述：
因此他不得不在家照看他.so he _____ _____ _____ _____ him at home.
答
如果是一般现在时,has to look after.
如果是一般过去时,had to look after.