C Rewrite the following sentences twice, using SINCE and FOR:
 Example: I haven’t seen you. (Christmas / 3 days) a) I haven’t seen you SINCE Christmas. b) I haven’t seen you FOR 3 days.
1. We’ve been here. (an hour / 4 o’clock) a) …………………………………………………………………………b) …………………………………………………………………………
2. She hasn’t spoken to me. (2 weeks / last week) a) …………………………………………………………………………b) …………………………………………………………………………
3. They’ve lived in this street. (1970 / a long time) a) …………………………………………………………………………b) …………………………………………………………………………
4. I haven’t had time to do it. (last Monday / a few days) a) …………………………………………………………………………b) …………………………………………………………………………
5. We haven’t bought a new one. (ages / many years) a) …………………………………………………………………………b) …………………………………………………………………