More patients ________ in hospital this year than last year.A.tre_英语解答

More patients ________ in hospital this year than last year.
A.treated B.have treated C.had been treated D.have have been treated
选D
为什么

人气：360 ℃　时间：2019-08-18 09:33:28

解答

A是过去时,不选.B不是被动态,因为这道题中人们是被送的,所以也不选.C是过去完成时,表达的是过去的过去,例如when i got to the theatre,the movie had begun.只有D时态合适也是被动态,现在完成时即以前一直做,现在可能仍继续做.