题目内容
It is difficult to ______ a conversation with someone who only says “yes” and “no”.
A.keep on B.keep down C.keep up D.keep in
C
练习册系列答案
相关题目
题目内容
It is difficult to ______ a conversation with someone who only says “yes” and “no”.
A.keep on B.keep down C.keep up D.keep in
C