A how much cost they are B how much do they cost C how much

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A how much cost they are B how much do they cost C how much they cost D how much are they cost.我搞不清楚BC的区别,希望明白的人给我讲明白些.

如果是单独的一个问句则用B不能省略助动词do,如果作为从句,就要省略助动词,还要改成陈述语序.

A how much cost they are B how much do they cost C how much How much do they cost? How much do they cost对还是how much are the cost对为什么How much are they?用are,而How much do they cost?就用do呢? how much do the glasses cost?回答“it cost”还是“they cost” How much () it () (cost) How much are they? how much are they how much ( ) are they How much do the cards cost?How much _____Amy_____buying the 1.______ does the book cost?A 、How B 、How many C 、How much D how much ___?A does it cost B is a price C do i spend