it is ten years since he became a doctor同义句
问题描述：
it is ten years since he became a doctor同义句
He became a doctor ___ ___ ___ ___.(4条线)
答
同义句：He became a doctor （about ten years ago）.
他十年前当了医生.Ϊʲô��about������е�������е���ᣬ�Ǻǡ�����ղ�̫�����ҵ����ʵĴ������ȷ����4���գ�就是4个空啊，所以就不会了……3个空那就很确定了……谢谢啊