Какая часть отсутствует в сложных словах: - child, - day, -friend, -house, -teacher?

1. i had to get

2. we didn`t have to

3. have you

4. i had to

5.my mother had to

здесь нужно вставить since or for!

так вот: 1. since 2. for 3. for 4. for 5. since 6. since 7. for 8. since это точно правильно)