IV. Rewrite the sentences without changing their meanings 16. I suggest we take part in a workshop. Why don't 17. Let's join the English Speaking Club with me. ->How about 18. It is not necessary for students to wear uniforms on weekends. (not have to) => Students 19. It is not a good idea for you to study at night. (shouldn't) => You 20. Students are not allowed to wear short jeans to school. (mustn't) > Students
