Mattayom 1 Entrance Exam - Spot the Mistake - Part 1

Can you spot the grammar mistakes? Click on the wrong words. There are TWO per sentence.
1. My brother go to school last Monday because he felt .
2. Sarah to the store every day, and she bread yesterday afternoon.
3. They want any more sugar in their coffee because it too sweet.
4. I am so about the trip tomorrow, and I can’t wait to the beach.
5. My sister studying math is difficult, but she still to do her best.