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  • -- That woman has been taking care of the two white tigers for 8 years.
Question 1:
-- That woman has been taking care of the two white tigers for 8 years.-- Oh, dear! She ______ a lot of difficulties!
A. could go through
B. must go through
C. should have gone through
D. must have gone through

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Modal Verbs - Test 1 | C1 – Advanced