How long did you study yesterday?I studied( )four hours.A in B fo_英语解答

How long did you study yesterday?I studied( )four hours.A in B for C.at
这是什么句型啊

人气：489 ℃　时间：2019-10-19 17:02:52

解答

选B for 加一段时间.没有延续到现在,故用一般过去时态.