Every possibles means ( )to prevent the air pollution,but the sky is still not clear.A.is used B.are used C.has been used D.have been used哪一个?为什么?

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 02:41:29
Every possibles means ( )to prevent the air pollution,but the sky is still not clear.A.is used B.are used C.has been used D.have been used哪一个?为什么?
xPAJ@ -Z=HI jQBKZH/33IV W b5{`ek: H<|D =0t-:1:iHZfQG0# Kʪ -wT4{`]thuDc{-ErUJcTeU9(Aį^*GSLK9ޘ_ɌAh\YܠޕSqRAiNt]4ٔ |,HM?&+7'^CD

Every possibles means ( )to prevent the air pollution,but the sky is still not clear.A.is used B.are used C.has been used D.have been used哪一个?为什么?
Every possibles means ( )to prevent the air pollution,but the sky is still not clear.
A.is used B.are used C.has been used D.have been used
哪一个?为什么?

Every possibles means ( )to prevent the air pollution,but the sky is still not clear.A.is used B.are used C.has been used D.have been used哪一个?为什么?
C
从句意看出是已经用过了,所以用完成时;因为前面是every,而means 单复同型,这里是单数,所以选C

选C,强调个体,用单数