18. f

19. h

20. i

21. a

22. k

23. c

24. l

25. b

26. d

27. e

28. g

$\text{18. What do you do in the evening? - f. I usually do my homework. (18 - f)}$

$\text{19. How did you go to Hue? - h. I went by train. (19 - h)}$

$\text{20. Did you join the sports festival? - i. No, I didn’t. I went to the zoo. (20 - i)}$

$\text{21. Where does she live? - a. She lives in Da Nang City. (21 - a)}$
$\text{22. Do you have school today? - k. Yes, I do. (22 - k)}$
$\text{23. What’s your city like? - c. It’s big and busy. (23 - c)}$
$\text{ 24. How often do you go fishing? - l. Once a month. (24 - l)}$
$\text{25. Where did you go last summer? - b. We went to Phu Quoc Island. (25 - b)}$
$\text{26. What did you do at the party? - d. We played hide-and-seek.(26 - d)}$

$\text{27. What will you do at the beach? - e. I will swim in the sea.(27 - e)}$

$\text{28. What lessons does he have today? - g. He has Maths, English and IT (28 - g)}$