He_______(become)a famous NBA player when he was 22

题目

He_______(become)a famous NBA player when he was 22
,用所给词适当形式填空,还要说为什么那样选择.

答案

He_______(become)a famous NBA player when he was 22.
填 became
看句子的后半部分.
when he was 22 说明是过去的时间,要用过去式（was）,become 的过去式就是 became