1 . — I can hear the water running in the bathroom.

— Yes, Bria __________ be taking another shower. (用适当的词填空)

2 . Anyone who wants to get the driving license __________ pass the eye test. (用适当的词填空)

3 . Anyone who wants to be a firefighter __________ have a sharp mind and calm nerves. (用适当的词填空)

4 . You __________ switch off your electronic devices when taking a plane. (用适当的词填空)

5 . Johnny, you __________ not play with the knife. you __________ hurt yourself. (用适当的词填空)

6 . According to the law, people under eighteen __________ not drink or smoke. (用适当的词填空)

7 . The school has made it a rule that students __________ not use mobile phones in class. (用适当的词填空)