Помогите, очень нужно!!!!!

1) At my last school, we had to wear school uniform instead. We wore a
2) It's raining outside. You should wear a coat.
3) Students have to leave this school after the age of sixteen. They
must go to a college.
4) In the future, students will be able to choose from a wider variety of subjects.
5) These days, students can email their teachers for help with their homework.
6) I need to buy some new shoes for school.
7) In the past, girls and boys could study in the same class.
8) I must study a lot of different subjects when I start my new school next month.
9) To drive a car, you have to have a licence.
10) You shouldn't use your mobile phone in class.
11) I have to pass this test - it's important.
12) I went out running and hurt my ankle. I didn't warm up. You should warm up before running.
13)She shouldn't talk during an exam.
14)She has to be a really good swimmer to get into the team.
15) My friends say I could be a nurse.

1 - couldn't
2 - should
3 - can't
4 - will be able to
5 - can
6 - have to
7 - couldn't
8 - can
9 - must
10 - can't
11 - have
12 - should
13 - wasn't able to
14 - must
15 - could be