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.
问题描述：
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.
答
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.