Consistent and robust use of determinants and alternative phrasings

[karaluo09]

General nouns

• [x] lists

• [x] variables

• [x] sounds

• [x] accents

• [x] voices

• [x] keys

• [x] volume

• [x] timer

• [x] backdrop

• [x] sprite

Numbers

• [x] add

• [x] subtract

• [x] multiply

• [x] divide