Question

1. My friends have known each other (since/for) 5 years.
2. Mary has had this book (since/for) Tuesday.
3. I have stayed at the hotel (since/for) 5 days.
4. He has lived in the country (since/for) many years.​

Answer 1

1. My friends have known each other FOR 5 years.

2. Mary has had this book SINCE Tuesday.

3. I have stayed at the hotel FOR 5 days.

4. He has lived in the country FOR many years.​