Find and correct a mistake in each sentence:

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VII. Find and correct a mistake in each sentence:
1. Mary promised her boyfriend that she would expect to see him next Wednesday.
2. The Nelsons asked us to look over their children while they were away on vacation.
3. I'm very glad that you've done lots of progress this semester.
4. One of the most urgent problem facing us now is the need to control population growth.
5. Many people like this novel writing by Ngo Tat To.
Your answers:
1.
2.
3.
Mistake
3
Correction