Answer: students must take Algebra I before they can take Algebra II. Dara is currently taking Algebra II. Conclusion: Dara has taken Algebra I in the past.
The others don't make sense because lots of other occupations wear hats, construction, fast food workers, etc. You don't have to be on a diet to lose weight, you can lose weight through working out, or sickness. Islands do have beaches but not all beaches are on islands.
