my father is ___in on sundays,but my sister often goes out on___s_英语解答

my father is ___in on sundays,but my sister often goes out on___sundays
为什么第一个是mostly 第二个是most

人气：149 ℃　时间：2019-08-20 18:53:44

解答

第一个是副词,修饰 is in
第二个是形容词,修饰 sundays