work for 15hours a day=work 15hours a day吗

work for 15hours a day=work 15hours a day吗 The day made him work for 12 hours a day~ he used to work fourteen hours a day.为什么不是for 14 hours a day the boss make him work for 12hours a day a working american has to work hard for eight hours a day or 英语翻译1、The workers were___(force) to work 15 hours a day.2、Yo He work ______ hours a day(介词或副词） He made her____(work)11 hours a day. How many hours do you work a day? They were made ----(work) more than ten hours a day. The boss made her ___(work) 10 hours a day. The boss made his workers_____(work)16 hours a day