Ex.1
1. for
2. for
3. since
4. since
5. for
Ex.2
1. How long have you lived in your flat?
2. How long has he been here?
3. How long has Di worked at the school?
4. How long have the students know each other?
Ex.3
1. I have already seen that DVD.
2. I've just finished my homework.
3. We arrived in England last weekend and we have already visited London, Oxford and Bath.
4. We haven't arrived at out station yet.
Ex.4
2. +
3. Kate didn't come to see the film with is yesterday.
4. I have never had ...
5. +
6. I learned to ski ....