Henning found

 Henning found (that students with a lower proficiency¹ in English made more of their mistakes on words that sound alike ; students with a higher proficiency made more of their mistakes on words that have the same meaning .) Henning’s results suggest (that beginning students hold the sound of words in their short-term memory , while advanced students hold the meaning of words in their short-term memory.
   
   
  Make a choice
  He suggested that I give up smoking.
  His suggestion that I give up smoking was impossible.
   
  Quantity—quality
  primitive tribe
  Brave
  Civilized—civilization—civilize
  Coke garlic—spring onion
  Foreign friends/language
  Abroad—go abroad
  Go to foreign countries
  Flesh/fat
  Chewing gum
  Helpless
  Digestion/digest
  Lemonade
  Groundwork/base
  Alkali
  Butter
  Combine with
  Chief editor
  Editor-in-chief mainly
  Container
  In fact
  Regard as
  Look as