Help the detective complete her official case file on the infamous Diamond Heist by selecting the correct reporting structures.
The missing diamond _________________________ to __________________________ millions before it was cut into smaller pieces by the thieves. Today, the mastermind behind the heist _________________________ to _________________________ on a sunny tropical island right now, comfortably evading the law.
The correct answers are:
- The missing diamond is estimated
- to have been worth
- the mastermind is reported
- to be living
Explanations:
- is estimated: We use the present passive ("is estimated") because this is the current belief of the authorities.
- have been worth: We use the perfect infinitive ("to have been + past participle/adjective") because the diamond's high value was a state in the past (before it was cut).
- is reported: Again, we use the present passive because this is what people report today.
- be living: We use the continuous infinitive ("to be + -ing") because the action is happening temporarily or continuously right now.