Title: Japanese / Danki Chapter 4

Q: How to ask how something was at a certain time?
I.E. Were you a good student when you were in high school?
A: <description> の　とき
Example:
高校（こうこう） 　の　時（とき）、いい　学生（がくさえい）　でしたか？

Q: How to specify you were alone?
Example: So, I went to the temple and the bookstore alone.
A: だから、一人　で　 本屋　と　お寺　に　行きました。
You use it as a location description.