This is one of the best products that _____sold this year.A.have been B:had been C:has been 请详细点为我剖析

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This is one of the best products that _____sold this year.A.have been B:had been C:has been 请详细点为我剖析

This is one of the best products that _____sold this year.A.have been B:had been C:has been 请详细点为我剖析
This is one of the best products that _____sold this year.
A.have been B:had been C:has been
请详细点为我剖析

This is one of the best products that _____sold this year.A.have been B:had been C:has been 请详细点为我剖析
选A,that引导的定语从句修饰的先行词是products,复数,因此选项C排除; 前面this is是一般现在时,不是过去的某个时态,所以不能用B,过去完 成时,因为其表示过去的过去,在此不合适.还有就是这一句中的this
year也体现出不能选B.选A,此题表明这个动作从过去的某个时间点一直持续,并将持续下去,直到this year结束.

A

this is是现在时,所以不用过去完成时had been
products复数,
选A

选择A。that引导从句修饰products,应为products是复数,所以C排除。
this year 所以时态上是现在完成时,排除B,so choose A
希望帮到你。

这是一个最好的产品,远销今年

选A 如果是the only one 就选C