| Question | I can't remember all these __________ (a formula). |
|---|---|
| A | formulaes |
| B | a formula |
| C | formulae |
| D | formulais |
| Answer | c |
| Remark | There are many nouns which have Greek or Latin origin. As a rule, they keep own endings: A FORMULA - TWO FORMULAE. 'Formulas' also can be used. |
Tags: noun
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