myid In following paragraph,which I quoted from the book, "Principles of economics", I think the verb in "that was the main" should be were not was. Am I right? The energy crisis of the 1970s, too, was blamed on nature's supply of oil, but in fact it was the actions of the Organization of Petroleum Exporting Countries, combined with price controls, that was the main cause of the shortages.
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myidIn following paragraph,which I quoted from the book, "Principles of economics", I think the verb in "that was the main" should be were not was.
Am I right?
The energy crisis of the 1970s, too, was blamed on nature's supply of oil, but in fact it was the actions of the Organization of Petroleum Exporting Countries, combined with price controls, that w