1.When did he b_____ a manager? 2.This morning Ben got to school the l______ in his class.
问题描述：
1.When did he b_____ a manager? 2.This morning Ben got to school the l______ in his class.
答
become late可是第一个有did啊？did是助动词did后面加动词原型啊？对become 的过去式是什么啊？你还没弄清吧？过去式是became ,过去分词是become.这道题里填动词原型。为什么要填动词的原型呢？句子是过去时态，did 是过去分词，。后面的动词要用动词原型。