.– She was in clas on Friday afternoon but no one has seen her since.---She an accident.

问题补充：

.– She was in clas on Friday afternoon, but no one has seen her since.

---She an accident.

A. might have

B. might have had

C. may have

D. ought to have had

答案：

A. might have

(答案→)B. might have had

C. may have

D. ought to have had

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