works very long hours 为什么不用介词for

Scott works very long hours My mother works very long h____ Mary works very long h____,so she is very t___ My father works very long hours.(改为一般疑问句） Scott works very long hours.全文七年级英语书 Scott works very long hours.(改为否定句） 首字母填词Mary works very long hours this t works very long hours 为什么不用介词for Sott works very long hours every day改为否定句 scott works very long hours every day.同义句转换 scott works very long hours every day.对long hours提问 rick works very long____(hour)every day按所给词适当形式填空 Mike works very long hours very day.为什么要用hours而不用time? Scott works very long hours.He usually gets up at 17:00. scott works very long hours every day.(改为否定句） sandy works very long house every day.（改为否定句） an hour-long He plays the piano very long （ ） .A.hour B.hours C.time D.times