1. She asked me how long it took me to get to my office if there was a traffic jam.

Here are the corrected sentences:

1. She asked me how long it took me to get to my office if there was a traffic jam.
   - Correction: The sentence needed to correct the word order for the question structure. "How long" should precede "it took me".

2. Pottery is passed down from artisans to trainees so that they can maintain the art.
   - Correction: Changed "passing" to "passed down" for correct verb tense and structure.

3. The trip to the countryside was very interesting and we all enjoyed ourselves a lot.
   - Correction: Changed "interested" to "interesting" to correctly describe the trip.

4. If you move quietly, you can see small wild animals in this area.
   - Correction: Changed "quiet" to "quietly" to modify the verb "move" correctly.

5. The Sahara Desert in Africa is the largest desert in the world, covering an area nearly as large as the US.
   - Correction: Added "the" before "largest desert" for correct article usage.

6. In my opinion, going by train isn't as convenient as going by car.
   - Correction: Added a comma after "opinion" for better punctuation.

7. She is bored with the silent surroundings because she used to live in a big city.
   - Correction: Changed "boring" to "bored" to correctly describe her feeling.

8. My friend told me that in her country it is impolite to rest your hands on your lap.
   - Correction: Changed "says me" to "told me" for correct past tense and structure.

9. The Japanese eat a lot of fish and healthy food, so they live for a long time.
   - Correction: Added "so" to improve the sentence structure.

10. If you live in a city, you are likely to see lots of people, hear the noise of traffic, and smell the pollution from vehicles.
    - Correction: Changed "pollution of vehicles" to "pollution from vehicles" for clearer expression.