1. It is necessary for us to obey traffic signals for your safety. - We ___________________________________________________________________ 2. It is illegal for women to drive in Saudi Arabia. - Women ________________________________________________________________ 3. It is unnecessary for me to go to work tomorrow. - I don/t ________________________________________________________________ 4. You should not play too much video games. - You/d______ __________________________________________________________ 5. It is wrong of you not to prepare homework at home. - You __________________________________________________________________ 6. You are not allowed to drive with dog on the roof in Alaska. - You ___________________________________________________________________ 7. Children are necessary to greet old people in the family first - Children________________________________________________________________ 8. When we ride a motorbike, we often wear a helmets - We must ______________________________________________________________ ______________