Hall, Eugene J <br/><br/>
Building english sentences with auxiliary verbs 
Eugene J. Hall 
 - Lincolnwood, Illinois USA  National Textbook Company  c1989 
 - 59 p.,  26 cm 
<br/><br/><label>ISBN: </label>0832504793 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Auxiliary verbs<br/>English language--Syntax