.Justin Bieber _____ famous all over the world when he was fiftee_英语解答

.Justin Bieber _____ famous all over the world when he was fifteen years old.A.became B.becomes C.will become D.is becoming

人气：246 ℃　时间：2019-08-21 07:22:57

解答

a谢谢你的回答。为什么？选a很明显说的是以前的事，用过去啊