i worked for 8 hours___ i finished it.填when还是before.这两个不是都可以吗

Tom worked for 20 hours on sunday(对20提问) 求会英文的java大神帮忙解决一道编程题Write a program that will ask a user for the total hours worked.If the hours worked Your picture is wonderful!l had worked for 8 hours＿＿l finished it.A.before B.as soon as C.till D.while He worked for ___ ten hours yesterday.He feels very tired today 应该填什么 After he worked for ten hours ,he felt quiet tired.(同义句） She worked for more than 10 hours every day.翻译成汉语! I danced for three hours last I sleep for nine hours every night I play football for(a )two hours I ____ for two hours yesterday afternoon 英语高手帮忙做英语改错题(急用)During the summer vacation I think I should do someting (1)meaningfully instead of touring.So I got a job at a fast food(2)restaurant and worked there for a cleaner.I worked 7 hours a day(3)for three weeks. 求英语大神做一道改错题During the winter vacation,I did something differently.I got a job at a restaurant and worked there for a cleaner.I worked eight hours a day for two weeks.The job was bored and seemed endless,and it made me such tired 求英语高手做一道英语改错题During the winter vacation,I did something differently.I got a job at a restaurant and worked there for a cleaner.I worked eight hours a day for two weeks.The job was bored and seemed endless,and it made me such for＋一段时间和yesterday在一个句子里用什么时态?He （ ） for ten hours yesterday.A worked B has worked I slept for two hours 和 I has slept for two hours的区别是什么 I worked for a company.中“for a companI worked for a company.中“for a company”做什么成分 Alice felt very tired after she worked for ten hours（保持原意）Alice felt very tired____ ____ for ten hours 关于过去完成时能否用forBy twelve o'clock,I had worked ten hours.这句话中能否在worked后面加for?加了会是什么含义?那能否说下for在什么情况下可以省略？在这句话中已经省略了？