Don't use words,expressions,or phrases____only to people weth specific knowledge.(说明原因)

问题描述:

Don't use words,expressions,or phrases____only to people weth specific knowledge.(说明原因)
A.being known
B.having been know
C.to be known
D.known

adapt
Don't use words,expressions,or phrases adapt only to people with specific knowledge
不要使用只适合于拥有专门知识的人的那些单词、表达和词组.
adapt to 适合