We all think that _____ no need to make laws to prevent the young from getting married during their college life.A. it is B. there has C. it has D. there is这一题答案是D,但是A是否也可以呢?(it可以作为后面不定式的形式主语,这样也说的通) 请老师解答。
This development—and its strong implications for US politics and economy in years ahead—has enthroned the South as America’s most densely populated region for the first time in the history of the nation’s head counting.句子中的 enthrone 如何理解?求讲解,谢谢老师!
That's about how high an object would have to be orbiting straight up from the equator to constantly remain directly above the exact same spot on the rotating planet Earth."would have to be orbiting"是什么时态?为什么要使用这种时态?