1 Detectives are trying to find the fraudster.
Detectives are looking for the fraudster.
2 The CIA began to investigate the case.
The CIA looked into the case.
3 They found the keys by accident in the garden.
They came across the keys in the garden.
4 The shoe appeared unexpectedly in the garden.
The shoe turned up unexpectedly in the garden.
5 Sherlock Holmes used logic to solve crimes.
Sherlock Homes figured out how to solve crimes.
6 After their investigation, they soon discovered where the thief was.
After their investigation, they found out where the thief was.
Ответ: See above