摘要：31． with his graduation design, he has been working in the library for a week. A．Having occupied B．Occupying Being occupied D．Occupied
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_______with his graduation design, he has been working in the library for a week.
A．Having occupied B．Occupying C. Being occupied D．Occupied
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_______with his graduation design, he has been working in the library for a week.
A．Having occupied B．Occupying C. Being occupied D．Occupied
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_______with his graduation design, he has been working in the library for a week.
| A．Having occupied | B．Occupying | C． Being occupied | D．Occupied |