How many lessons do you usually have a day?—Six lessons a day,and each of then____45 minutesA last B lasts C have D are 为什么要选B

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Howmanylessonsdoyouusuallyhaveaday?—Sixlessonsaday,andeachofthen____45minutesAlastBlastsChaveDare为什么

How many lessons do you usually have a day?—Six lessons a day,and each of then____45 minutesA last B lasts C have D are 为什么要选B
How many lessons do you usually have a day?—Six lessons a day,and each of then____45 minutes
A last B lasts C have D are 为什么要选B

How many lessons do you usually have a day?—Six lessons a day,and each of then____45 minutesA last B lasts C have D are 为什么要选B
last是持续的意思,也就是一节课持续45分钟.然后each(每节课)要跟动词第三人称单数搭配,所以要加S

这题太简单了,each后用单数啊。你看看四个选项里,只有B,lasts 是单数形式,而其他都是复数形式哦

each of them,each是指每节课,单数,所以是B

last持续
另外each 第三人称单数