Little___done to prevent the air from being polluted.Much___done to fight against pollution.A.has been;have beenB.have;hasC.has been;has beenD.have been;have beenFive hundred dollars___more than he can afford.A.is B.are

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Little___done to prevent the air from being polluted.Much___done to fight against pollution.A.has been;have beenB.have;hasC.has been;has beenD.have been;have beenFive hundred dollars___more than he can afford.A.is B.are

Little___done to prevent the air from being polluted.Much___done to fight against pollution.A.has been;have beenB.have;hasC.has been;has beenD.have been;have beenFive hundred dollars___more than he can afford.A.is B.are
Little___done to prevent the air from being polluted.
Much___done to fight against pollution.
A.has been;have been
B.have;has
C.has been;has been
D.have been;have been
Five hundred dollars___more than he can afford.
A.is B.are

Little___done to prevent the air from being polluted.Much___done to fight against pollution.A.has been;have beenB.have;hasC.has been;has beenD.have been;have beenFive hundred dollars___more than he can afford.A.is B.are
1.C little ,much 代替抽象内容,后面谓语用单数.
2.A Five hundred dollars 作为一个整体考虑,谓语用单数.

1. C little much 等不定代词作主语,谓语用单数
2. A 主语：Five hundred dollars 被看成一个整体

C, C

CCA

A Little在这里表示少量的，much是和Little相对的意思
A dollar是不可数名词，Five hundred 表示的是数量

Little Much 都代表不可数,只能has been
钱不可数,只能is

Little___done to prevent the air from being polluted.Much___done to fight against pollution.A.has been;have beenB.have;hasC.has been;has beenD.have been;have beenFive hundred dollars___more than he can afford.A.is B.are 请问PRE-ALERT是什么意思SEND PRE-ALERT TO AGENT OF 怎么翻译呀 PRE是什么意思 Pre-Order PRE是什么意思 Pre-advanced pre-tax 什么是Pre pre container 什么是Pre pre-training PRE-FLOW pre-digital pre-degree Pre-Primary pre-victorian Pre amplifier prefer to doing rather than do还是pre fer to do rather than do