Instruction
Select the best answer to complete the sentence.
1. Please take care of these -------- orphaned children.
2. My colleague had been studying Korean -------- for the three years of high school.
3. -------- fire, there are some emergency exits in this building.
4. There is a possibility that ---------- will occur in the newly developed machine.
5. Steve -------- here since 2011, after the Great East Japan Earthquake.
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