Ex.1
1. since
2. since
3. for
4. since
5. for
Ex.2
1. did you go
2. have eaten
3. have you lived
4. saw
5. haven't done
Ex.3
1. Have you ever played a musical instrument?
2. I have never won a music competition.
3. Has Joanna ever written her own songs?
4. Have you ever lived in another country?
5. Jack has never played his guitar at a concert.
Ex.4
1. ever
2. been
3. never
4. haven't finished
5. gone