English words do not end in V. There will always be an E after the V. If you can hear the “v” sound at the end of an English word, it’s a safe bet to put the letter E after it.
The saying I was taught is: “No English words end in V, it will always be followed by an E.”
Examples:
Active
Effective
Behave
Hive
Have
Grove
Serve
Salve
Solve
Reprieve
Receive