Answer and Explanation:
According to the instructions, the underlined words are "teacher" in the first sentence and "2010" in the second one.
A question that requires more than just "yes" or "no" to be answered needs question words: how, when, where, what, which, etc.
The first word concerns a profession, a job, a role Navya performs. This question will need the question word "what" to get "teacher" as the answer:
1. What is Navya's job in the High School?
OR
What does Navya work as in the High School?
The second question we will come up with concerns time, which means we are going to need the question word "when":
2. Since when has Alex been working abroad?