Three million tons of coal ___ exploited every year.A is B are

问题描述:

Three million tons of coal ___ exploited every year.A is B are

Three million tons of coal __are_ exploited every year. 每年大约有3百万吨煤炭被开采.我要说从句子主干分析是错误的哦,先说错误的方法.从句子主干,three million tons of 修饰coal ,因此主语主干是coalevery yea...