摘要： Mr. Irvine, who in a high school for forty years, is now living in retirement. A. had taught B. taught C. has taught D. had been teaching
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Mr. Irvine, who ________ in a high school for forty years, is now living in retirement.
A. had taught B. taught C. has taught D. had been teaching
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Mr. Irvine, who ______ in a high school for forty years, is now living in retirement.
- A.had taught
- B.taught
- C.has taught
- D.had been teaching
Mr. Irvine, who ________ in a high school for forty years, is now living in retirement.
| A．had taught | B．taught | C．has taught | D．had been teaching |