6. Hoa said she felt sick and might get COVID-19.
7. The students emphasized the necessity of washing our hands regularly at school.
8. Tom emphasized that his students must wear masks when they go to school.
9. I instructed my daughter to inform me of any symptoms.
10. The students noted that they could easily do the test because of their online learning.
11. Ba attributed his sister's passing the exam to her hard work.
12. The students expressed their fear of COVID-19 due to the lack of a cure.
13. Tom lamented that despite being vaccinated against COVID, he still caught it.
14. Hoa explained that her parents didn't go to work due to illness.
15. Tom explained that he avoided hanging out because of his concerns about contracting COVID.
16. Ba explained that due to his busy schedule, he rarely visits his mom.
17. Linda mentioned that her sister often helps her when she isn't busy.
18. Ba mentioned his intention to visit his best friend tomorrow due to her illness.
19. Tom informed Hoa that he had given her the medicines to cure COVID the day before.
20. Mary mentioned that she hasn't eaten out since COVID appeared.
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