1. We use (A) to walk (B) miles to school every day due to lack (C) of public (D) transport.
2. You are not allowed (A) to drive (B) faster than (C) the number on a limit speed (D) sign.
3. A sign (A) within a red (B) triangle will warn (C) people for (D) something.
4. Be careful (A) when you are on (B) roads. You must (C) drive fast or