What's the plural?

http://www.manythings.org/fq/1/8990.html

Which ones are plural ?

http://www.clta.on.ca/EAOnline/GrammarCentral/number.html

"To have" negative

http://www.clta.on.ca/EAOnline/GrammarCentral/verbnegative.html

Verb "to have"

http://www.clta.on.ca/EAOnline/GrammarCentral/verbtohave.html

Plural nouns

http://www.clta.on.ca/EAOnline/FlashedESL/fe-pluralnoun2.html

Plural

http://www.clta.on.ca/EAOnline/FlashedESL/fe-pluralnoun.html