Mattayom 1 Entrance Exam - Spot the Mistake - Part 4

Can you spot the grammar mistakes? Click on the wrong words. There are TWO per sentence.
1. Emily a letter her grandmother last night.
2. We have already our homework today.
3. James to abroad next year.
4. The children happily in the garden.
5. I will be my cousin Chiang Mai during the holidays.