Mix short sentences with longer ones using "and," "but," or "because."

| Grade | Percentage | Descriptor | |-------|------------|-------------| | A | 85–100% | Excellent grammar, clear ideas, full answers | | B | 70–84% | Good control, minor errors | | C | 55–69% | Satisfactory but some grammar mistakes | | D | 40–54% | Limited vocabulary, weak structure | | F | <40% | Needs significant support |

Fill in: in / on / at

Rewrite using :