for three days, for two years,这些都是how long的回答,那么回答前是for的就一定是

for three days, for two years,这些都是how long的回答,那么回答前是for的就一定是 比如说for two days是什么疑问句的回答,还有in two years的,主要想知道疑问句开头的疑问词是什么,是 how long can the man keep the book的回答用for two weeks还是two wee 百度上的没有看懂~How long have you＿＿＿＿ For three days. -How long _____you _____the library book?-For three days. How long ___you___(stay)?--I'm staying for three days. for three days的意思 请老师回答,填适当的单词The boy has been missing for three days.Everyone how long did you skate?--I skated for two years. two days later ; in two days ; for two days ; two days late的 1.he must remain in bed for another two days 就划线部分提问,划线的是后面四 什么情况下How long 不用for回答?什么时候用for回答?