Ben ______ a teacher for 4 years . A. has been B. has become C. was D. became I ______ home

Ben ______ a teacher for 4 years . A. has been B. has become C. was D. became I ______ home

1.A. has been 2.B. have been back 3. C. has, been dead 4.B. was sleeping 5C. has had 6C. have, been 7. C. has been away from 8. B. keep 9. C. has been 10. A. wearing 11. C. has been up 12. D. has had 13.D. keep 14.D. is she
除了最后一题是考反义疑问句的回答。其它都是考的现在完成时间用法，要接可延续性动词。所以是这些答案。