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
Answers & Comments
30. C data
31.A formula
32.B hours
33.C cheeses
30 Did he give you all the necessary data?
31 Mark couldn't remember this simple math formula.
32 How many hours do you sleep every night?
33 We tasted a variety of cheeses.