25. ---You ____ him more help, even though you were very busy.
---Well, now I regret not.
| A．might have given | B．may give |
| C．must have given | D．should give |
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25. ---You ____ him more help, even though you were very busy.
---Well, now I regret not.
| A．might have given | B．may give |
| C．must have given | D．should give |
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