Use Present/Past/Future Perfect or Present /Past/Future Perfect Continuous and write down the following sentences.
Example: By next Friday I (work) on this project for two weeks. By next Friday I will have been working on this project for two weeks.
1. I am sure that he (follow) a thief for two hours already.
2. He was very glad. He (get) necessary documents
3. I am not reading the report because I (read) it twice.
4. No doubt, by the time you call they (come) to the court.
5. When I call the investigator (question) the accused for an hour.
6. They (inspect) the place of murder for half a day when I call to inform the chief investigator.