- Let's investigate.
- Let's go and investigate.
- We must investigate social abuses.
- Investigate the cause of it.
- I came here to investigate Tom's death.
- I tried to investigate his opinion indirectly.
- The policeman promised to investigate the matter.
- It's my business to investigate such things.
- I'm going to investigate this case.
- They are going to investigate the affair.
- A committee was constituted to investigate prices.
- The government appointed a committee to investigate the accident.
- Investigate thoroughly the bushes where the enemy may be hiding.
- The farmer that lived nearby came to investigate.
- She tried to investigate the truth about the rumor.