2. How many years you know him? 
3. How many letter have you received from him since September?
4. Has he already finished his breakfast?
5. 
6.
7. In which country has he gone? 
8.
9. To who hasn't she written for years? 
10. How many times have you been late this month, you think?
11. What he has made for a year?
12. How much time have you known him?

2. How long have you known him?
3. How many letters have you received from him since September?
4. Has he finished his breakfast?
5. Since when has she typed two letters?
6. How long haven't you heard from him?
7. Where has he gone?
8. Since when has he been in the USA?
9. Who hasn't she written to for years?
10. How many times have you been late this month?
11. What has he made for a year?
12. How long have you known him?