The letter ____three days ago and it ____yesterday.A.was posted,a_其他解答

The letter ____three days ago and it ____yesterday.
A.was posted,arrived
B.had been posted,was arrived

人气：135 ℃　时间：2019-12-08 11:42:05

解答

第一个空：信应该是被邮寄,所以用被动语态, 三天前,只能用过去式的被动语态,was posted.
第二个空arrive是不及物动词,不及物动词没有被动语态,所以选arrived.