题目

 Michelle found a job as a high school teacher which _____ spending quite a lot of time with students.      A. enjoys                        B. practices          C. involves                     D. suggests 答案：CMr. Irving, who ____ in a high school for forty years, is now living in retirement. A． has taught　　　　　　　　　　 B． taught C. had taught　　　　　　　　　　 D． has been teaching