Cho dạng đúng của từ trong ngoặc

19. My aunt works as a …………….……………. at a university. (CHEMISTRY) 20. Students of our school are …………….…………….with one another. (FRIEND) 21. The …………….…………….of the experiment is 20 minutes. (LONG) 22. Be …………….…………….! The ground is very wet and slippery. (CARE) 23. When foreigners talk to him, he can speak English …………….…………….with them. (EASY) 24. I like the fried chicken in our school canteen: it's really …………….…………….. (TASTE) 25. Sometimes we are bored and…………….…………….with his long lectures. (SLEEP)