25. ---You him more help even though you were very busy.---Well now I regret not.A. mig

问题补充：

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

答案：

A. might have given

B. may give

C. must have given

D. should give

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