Rewrite the sentences

18.    The teacher said to her students : “ Don’t talk in class during the test ”
                                                        
19.     “Shut the door behind you ! ”, his aunt said to him.
                                                        
20.    “Can you explain this word for me ”, Tan said to Nga.
                                                        
21.    “Don’t leave your coat on your chair ”, his wife said to him.
                                                        
22.    They said to me : “ Don’t ask these people about their salary ”.
                                                        
23.    “You shouldn’t translate each sentence into Vietnamese ”, his brother said.
                                                        
24.    Nhat said to Tan, “May you help me with my English pronunciation ?”
                                                        
25.    The old man said to the boy, “Can you help me carry my bags ?”