should/shouldn’t..
- I think that everyone should wear helmets when riding motorcycles, trams or even bicycles if necessary when riding in traffic.
- I think you shouldn't pass the red light
must / mustn’t...
- I think you must look ahead and back carefully, raise your hands in the signal, and don't jump around when crossing the street
- I think you mustn't block the path of large construction vehicles
*Không biết cần ghi bn câu ạ*