#1.
1. Since
2. For
3. Since
4. Since
5. For
#2.
1. Since 1999
2. Since the winter
3. For two weeks
4. Since October
5. For two years
#3.
1. I nave been here for three weeks
2. I have known him since childhood.
3. I have lived here for five years.
4. I have had them since week ago( не уверен)