题文
________ themselves, the employees in this company usually have a coffee or tea during their break time.
| A.Refreshing | B.To refresh |
| C.Refresh | D.Having refreshed |
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________ themselves, the employees in this company usually have a coffee or tea during their break time.
| A.Refreshing | B.To refresh |
| C.Refresh | D.Having refreshed |
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