Here are the sentences completed with the appropriate verb forms:

3) It’s **since I last saw him** at Tom’s wedding day.
_I haven’t seen him_

4) It’s **years since Mary last spoke French**.
_Mary hasn’t spoken French_

5) It’s **ten years since I last had a good night’s sleep**.
_I haven’t had a good night’s sleep_

6) It’s **years since I last took photographs**.
_I haven’t taken photographs_

3) It’s **since I last saw him** at Tom’s wedding day.
_I haven’t seen him_

4) It’s **years since Mary last spoke French**.
_Mary hasn’t spoken French_

5) It’s **ten years since I last had a good night’s sleep**.
_I haven’t had a good night’s sleep_

6) It’s **years since I last took photographs**.
_I haven’t taken photographs_