33. Nowadays young people pay more attention to traditional festival than they did some years ago.
→ Some years back young _______________________________
34. This is the first time they have experienced the wonderful feeling in space.
→ They have never _____________________________________
35. We should teach young children to care for the environment.
→ I suggest young children ______________________________
36. Drivers and passagers must fasten the seat belt when travelling in cars.
→ It is compulsory for __________________________________