S1. Commonly vehicle-occupied places tend to be a pedestrian zone. A1. "A pedestrian zone means no cars are allowed." Commonly pedestrian zones are unoccupied by cars/vehicles. S2. By being put into risk-free situations, he has become shy and confidence-lacking. A2. By avoiding risk, he has become shy and lacking in confidence. S3. Everyone can figure out the feeling after standing once during long hours of sitting. A3a. Everyone knows the feeling of standing after sitting for a long time. A3b. Everyone knows the feeling of standing after sitting for hours on end. A3c. We can all imagine the feeling of standing after sitting for hours on end. S4. A con-texture of lies can lead to the biggest shame once exposed. A4. A spiral of lies can lead to the gravest of shame once exposed. Hope this helps..