You cannot put an adjective between "so" and "that."
| Structure | Meaning | Example | | :--- | :--- | :--- | | | Shows result (cause → effect) | It was raining, so I took an umbrella. (Rain caused the umbrella.) | | so that | Shows purpose (goal/intention) | I took an umbrella so that I wouldn’t get wet. (The goal was staying dry.) | so so that exercise primary 6