10113 - Part D (Page 167) Test:9 - A: ________ is responsible for all this confusion? B: It may be Jack.  

A: ________ is responsible for all this confusion?
B: It may be Jack.
 
Whom
Why
Who
How
Table of English Grammar Contents (All Levels)
Upper-Intermediate Grammar Exercises
Elementary Grammar Exercises A1
English Vocabulary Tests