1- Does a postman deliver mail ? Yes, he .
2- Do firefighters deliver mail ? No, they .
3- Do waiters and waitresses work in bars and restaurants ? Yes, they .
4- Does the cook prepare meals ? Yes, he .
5- Does the waitress cook ? No, she .
6- Do detectives investigate ? Yes, they .
7- Does a secretary answer the phone ? Yes, she .
8- she type letters ? Yes, she does.
9- a saleswoman look after patient ? No, she .
10- mechanics repair cars ? Yes, they .