School life is____preparation for our working days____. A.a;to be coming B.不填;to comeC.不填;to comingD.a;to come求详解

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School life is____preparation for our working days____. A.a;to be coming B.不填;to comeC.不填;to comingD.a;to come求详解
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School life is____preparation for our working days____. A.a;to be coming B.不填;to comeC.不填;to comingD.a;to come求详解
School life is____preparation for our working days____. A.a;to be coming B.不填;to come
C.不填;to coming
D.a;to come
求详解

School life is____preparation for our working days____. A.a;to be coming B.不填;to comeC.不填;to comingD.a;to come求详解
首先说preparation,它在不同的事情下可以当做可数名词,也可以当做不可数名词.
prepration
n.
准备(状态),预备(状态)
The course teaches traditional methods of food prepration.[不可数]
制作(或配制)的东西,制剂
The company is developing a new pharmaceutical preparation suitable for the treatment of gastric ulcers.[可数]
所以在这里,preparation是不可数名词,即school是你工作前的一个状态,而并非一件具体的事物.A D 排除掉了.
另外,语感好的话,肯定可以把C排除掉,没有to 后面接V+ing的.
是一首歌.但是可以看出习惯的表达方式是 to come,不是to be coming,也不是to coming.
这个主要是考你preparation在什么情况下是可数的什么情况下是不可数的.