He________________________(成为一名工程师)when he left university.He____ _____ _____ (成为一名工程师)when he left university.

来源:学生学帮网 编辑:学帮网 时间:2024/06/14 10:41:56

He________________________(成为一名工程师)when he left university.
He____ _____ _____ (成为一名工程师)when he left university.

had been an engineer
became an engineer