You’ve done it twice. Why not try ___ time?
A. third
B. the third
C. a third
D. once
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Which is ____? It’s December.
A. the twelfth months
B. the twelfth month
C. the twelveth months
D. twelve months
There are ___ floors in the building and he lives on the ____ floor.
A. eighteen, fifteen
B. eighteenth, fifteenth
C. eighteen, fiveteen
D. eighteen, fifteenth
____of the apples in the fruit bowl are soft and sweet.
A. Two-third
B. Second-third
C. Two-thirds
D. Second-thirds
A UN report says that the world population will pass six billion by the end of ____ century.
A. twentieth
B. twenty
C. the twentieth
D. the twentyth
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