Some investigations show that the cause of the accident may be the car engine's__.a.fail to operate b.failure to operate c.fail in operation 答案说选b,WHY?

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Some investigations show that the cause of the accident may be the car engine's__.a.fail to operate b.failure to operate c.fail in operation 答案说选b,WHY?
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Some investigations show that the cause of the accident may be the car engine's__.a.fail to operate b.failure to operate c.fail in operation 答案说选b,WHY?
Some investigations show that the cause of the accident may be the car engine's__.
a.fail to operate
b.failure to operate
c.fail in operation
答案说选b,WHY?

Some investigations show that the cause of the accident may be the car engine's__.a.fail to operate b.failure to operate c.fail in operation 答案说选b,WHY?
对啊,是选B
因为前面有个engine's,这就表示后面要跟一个名词.而只有B选项的failure是名词.

选b
car engine's(汽车发动机的)后面要接名词，而a和c的fail是动词

engine后加's说明只能加名词或者动名词.
这种句型记住就好了

以下这道题``选哪个?We must make some investigations we can draw any conclusion.We must make some investigations we can draw any conclusion.A.sinceB.beforeC.untilD.when Some investigations show that the cause of the accident may be the car engine's__.a.fail to operateb.failure to operatec.fail in operation选哪个?为什么? Some investigations show that the cause of the accident may be the car engine's__.a.fail to operate b.failure to operate c.fail in operation 答案说选b,WHY? 翻译：Results of accident investigations and recommendations for actions to minimize the risk of 谢 帮忙看下这句话有没有语病However,the prior studies haven’t conducted investigations intothis topic. some some some some some some Some some some some some some Some