Final answer:
The sentences contain errors in verb tense and subject-verb agreement. The correct versions are provided for each sentence.
Step-by-step explanation:
The sentence has errors in verb tense and subject-verb agreement. The correct rewrite should be:
- I am writing a letter to my friend.
- It takes some time.
- I am wondering what to write.
- Today, I am going to tell her about fashion trends that change every six months.
- I am not wasting any more money on new things.
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