19. Anna's mother is from China; however, she can't speak Chinese.
20. Students are required to hand in their assignments on time according to the rules.
21. I'm going to buy a hybrid car because it uses less gas than other cars.
22. Solar panels are quite expensive to install, but you'll save money on electricity in the end.
23. I spent two hours sightseeing in Melbourne.
24. The children are looking forward to visiting the National Air and Space Museum.
25. Like Chinese people, Vietnamese people also give children lucky money on Lunar New Year.
26. Mid-Autumn Festival will take place on September 10th, 2022.
27. My father is the best driver in my family.
28. An underground train across London is cheaper at £6 compared to a taxi at £15.
29. Anna's mother is from China; however, she can't speak Chinese.
30. Students are required to hand in their assignments on time according to the rules.