Present Perfect + since or for

1. Nobody has seen him ________ last Friday.

• since

• for

2. It has been foggy ________ some days.

• since

• for

3. He has been fishing ______ six o'clock.

• since

• for

4. They've been living in France ________ eight years.

• since

• for

5. The pilots have been on strike ______ two months.

• since

• for

6. We've had terrible weather _________ Saturday.

• since

• for

7. I've known Tom _________ 1990.

• since

• for

8. We have been waiting for the bus _________ half an hour.

• since

• for

9. She hasn't lost a match ________ April.

• since

• for

10. Things have changed _________ she's become headmaster.

• since

• for