Choose the correct word. 1. Dennis *HAS FINISHED/HAD FINISHED* work before the thief robbed his shop.

2. We want *TO THANK/THANKING* the security guard for his help.

3. Peter *WAS JOGGING/JOGGED* in the park when he saw the vandal's.

4. Helen *HAS TAKEN/HAD TAKEN* twenty pictures of the crime scene so far.

5. It was *THE BIGGER/THE BIGGEST* police investigation in recent history.​