1/15
ruler
 
2/15
clock/watch
 
3/15
magazine
 
4/15
pencil sharpenener
 
5/15
chair
 
6/15
phone/telephone/cellphone (list all three as shown)
 
7/15
television
 
8/15
scissors
 
9/15
chalk
 
10/15
window
 
11/15
there is/there are
 
12/15
male student(2 ways list both)
 
13/15
female student(2 ways list both)
 
14/15
male teacher(2 ways list both)