题文
All her time ________ experiments, she has no time to see films.
| A．devoted to do | B．devoted to doing |
| C．devoting to doing | D．is devoted to doing |
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All her time ________ experiments, she has no time to see films.
| A．devoted to do | B．devoted to doing |
| C．devoting to doing | D．is devoted to doing |
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