1. I see the snow (to stop).
2. As a rule I (to have) eggs for breakfast, but this time I (to order) porridge.
3. This is the house where I (to live). I (to live) here since childhood.
4. Once in a week I (to write) letters home, but I (not to write) one this week, so my next letter must be very long.
5. She just (to ask) a porter to carry her bags as they (to be) too heavy for her.
6. I regularly (to see) him every morning at the bus-stop, but I (not to see) him these days.
7. You (to be) the first guest I (to have) since my return.
8. It (to be) afternoon. It (to stop) raining, and the sun (to come) out.
9. Thank you for everything you (to do). I (to learn) a great deal from you.
10. I (to believe) Mr Smith (to pay) you a visit this afternoon.
- Yes, he just (to go).
11. I (to know) her for fifteen years, but I never (to hear) you speak like that before.
12. How long she (to be) away? It (to seem) ages.

 I see the snow has stopped. 2. As a rule I have eggs for breakfast, but this time I have ordered porridge. 3. This is the house where I live. I have lived here since childhood.4. Once in a week I write letters home, but I have not written one this week, so my next letter must be very long.5. She has just asked a porter to carry her bags as they are too heavy for her.6. I regularly see him every morning at the bus-stop, but I have not seen him these days.7. You are the first guest I have have since my return. 8. It is an afternoon. It has stopped raining, and the sun has come out. 9. Thank you for everything you have done. I have learned a great deal from you. 10. I believe Mr Smith has paid you a visit this afternoon. - Yes, he has just gone out .11. I have known her for fifteen years, but I have never heard you speak like that before.12. How long has she been away? It seems ages.