30. Did he give you all the necessary A datum B datas C data D datums 31. Mark couldn't remember this simple math C formulum D formulas A formula B formulae 32. How many ... do you sleep every night? A hour C hourum B hours D hourums 33. We tasted a variety of ... A cheese B cheese's C cheeses D chesses ​

  30. C data

   31.A formula

   32.B hours

   33.C cheeses