V n in n; V n on n

His face is etched in my memory.

Every detail of the attack is etched on the captain's memory.

Joseph instructs a class in woodwork.

The video instructs them on body language.

I think that you should put your questions down in writing and then I can discuss the matter with the board.

I wish to thank my friend Tamar Karet who encouraged me to develop my ideas and put them down on paper.