Помогите переделать слова в множественные

Give the plural of the following nouns.

curriculum -

formula -

basis -

nucleus -

swine -

series -

criterion -

datum -

cheese -

Напишите слова во множественном числе 1. basis 2. curriculum 3. phenomenon 4. datum 5. criterion 6. stratum 7. analysis 8. cactus 9. formula 10. index 11. medium 12. memorandum 13. antenna 14. genius 15. appendix 16. ox 17. cuckoo 18. child 19.

Form the plural: 1. wife 2. series 3. safe 4. datum 5. criterion 6. species 7. analysis

Form plurals of the nouns if possible 1) nucleus 2) datum 3) child 4) goose 5) cheese 6) comedy 7) boy

Переведите во множ. число Radio, datum, slot, key, directory, fax, floppy, virus, e-mail, mobile, chat, browser, switch, capability, display, activity, formula, crisis, criterion, machine, analysis, spammer, index, medium, chip.

Choose the appropriate number of nounse given in brackets. 1. These (phenomenon, phenomena) often occur in nature. 2. Students in our group belong to various social (stratum, strata).3.