atabitaraf
Key Member
- Joined
- May 19, 2010
- Member Type
- Student or Learner
- Native Language
- Persian
- Home Country
- Iran
- Current Location
- Iran
I couldn't find the error in this test I had in my class, I would be grateful if you helped.
- Nylon, a synthetic done from a combination of water, air, and by-product of coal, was first introduced in 1938.
- Nylon, a synthetic done from a combination of water, air, and by-product of coal, was first introduced in 1938.
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