The woman biologist stayed in Africa studying wild animals for 13 years before s

游客2025-07-30  1

问题 The woman biologist stayed in Africa studying wild animals for 13 years before she returned. Oh, dear! She______ a lot of difficulties!

选项 A、may go through
B、might go through
C、ought to have gone through
D、must have gone through

答案 D

解析 情态动问+have done表示对过去的推测。句意:“为研究野生动物,这个女生物学家在回来前在非洲呆厂13年。”“哦!她一定克服了许多困难。”答案为D。
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