里必须穿校服吗？ __________________________________ ---是的，必须。/ 不，不必。 _______________________________4. 你们必须做什么？ _______________________________ 5. 在图书馆里我们必须保持安静。 _________________________________What are the rules?ExercisesCan we wear a hat in class? ---Yes, he does. / No, he doesn’t. ---Does he have to wear a uniform at school?What do you have to do?We have to be quiet in the library. 1. He |
