ПОМОГИТЕ С АНГЛИЙСКИМ ПОЖАЛУЙСТА!!!!!

Question

Choose the right modal verb 
The defendant (must/can) appear in court on the scheduled date 
All witnesses (should/must) tell the truth in court 
The attorney (can/must) appeal the decision within 30 days In a criminal trial, the jury (should/must) reach a unanimous verdict 
A suspect (may/must) remain silent to avoid self-incrimination 
The defendant (may/should) be found guilty if the jury agrees 
The new regulation (could/must) lead to stricter enforcement