—ThewomanbiologiststayedinAfricastudyingwildanimalsfor1...

问题详情：

—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. must have gone through

C. ought to have gone through                    D. might go through

【回答】

B

知识点：情态动词

题型：选择题