—ThewomanbiologiststayedinAfricastudyingwildanimalsfor...

問題詳情：

 —The woman biologist stayed in Africa studying wild animals for 13 years before she returned.

—Oh, dear! She ______ a lot of difficulties!

  A. may go through     B. might go through

  C. ought to have gone through     D. must have gone through

【回答】

D

知識點：虛擬語氣與情態動詞

題型：選擇題