Each of these sentences has one mistake. Rewrite the correct form: (4 marks) Note: RE-WRITE the whole sentence with PUNCTUATION MARKS and CAPITALIZATION. 1. All visitors' ID cards checked at the barrier by two security men. 2. The door which it led to the back stairs was locked from the inside. 3. There are certain types of mushrooms contain a deadly poison. 4. All projects must submit by the end of April