—I’ve got a new English teacher, Lucy Mere.
—Lucy Mere? She happens me before. She is patient.
A. to teach
B. teaching
C. to have taught
D. having taught
网友回答
A. to teach
B. teaching
(答案→)C. to have taught
D. having taught
解析：考查happen的用法。 happen to have done 表示碰巧做过没事 happen to do碰巧做某事 happen to be doing 碰巧正在干某事。本句意为--我们有一个新的英语老师，lucy mere。 -----Lucy Mere? 她碰巧以前教过我。她很有耐心。