It's high time that (the government made strict regulations on food safety issues).It's high time that 句型表示“早该是……的时候了”,谓语动词用一般过去式.从句谓语通常用过去式表示现在或将来,有时也用过...the government should formulate severe laws and regulations on food safety issues可以吗这个句型用一般过去式更多些，用should do句型也可以。