A walk in the forest vocabulary
The pickpocket started running. The detective ..... him.
If the pickpocket HADN'T STARTED running, the detective WOULDN'T HAVE CHASED him.
The boy ..... so his father informed the police about it.
If the boy HADN'T VANISHED, his father WOULDN'T HAVE INFORMED the police about it.
My friend ........... for me to keep a secret, so I didn't say anything
If my friend HADN'T GESTURED for me to keep a secret, I WOULD HAVE SAID something.