Ответ на Grammar Check, Module 7, Номер 2 из ГДЗ по Английскому языку 8 класс: Ваулина (Учебник Spotlight)

2 Choose the correct alternative for each sentence.
1 It’s a good idea to get a good night’s sleep before an exam.
b You should get a good night's sleep before an exam.
2 Use of mobile phones in the classroom is forbidden.
a You mustn’t use your mobile phone in the classroom.
3 It’s necessary for students to finish the project by the end of the week.
b Students have to finish the project by the end of the week.
4 It’s possible that our Physics teacher will be away tomorrow.
b Our Physics teacher may be away tomorrow.
5 The school rules state that students are obliged to bring a doctor’s note when they are ill.
a Students must bring a doctor’s note when they are ill.
6 It isn’t necessary for you to join your school’s swimming team.
a You don't have to join your school’s swimming team.