13.I was born ____.

13.I was born ____.
A.in her sixties B.in early sixties
C.in the sixtieth D.in the sixties
14.He finished university in ____.
A.twenty B.twenties
C.early twenties D.his early twenties
15.The old man bought ____ eggs.
A.three score B.three scores
C.three scores of D.scores three
16.He wrote ____ article on computer.
A.a 800-word B.800-words
C.800-word D.an 800-word
17.The boy had ____ sheep to see to.
A.a lot of B.a large amount of
C.a great deal of D.a great many of
18.The police talked to him because he was ____ to enter the hall and the last to leave.
A.No.One B.one
C.the first D.first
19.Every year ____ students from this school are send to Britain to learn English.
A.six dozen B.six dozens
C.sixth dozen D.sixth dozen of
20.There’re 30 girls in our class,____ are from the country.
A.Three they B.The three of them
C.Three of them D.All three of them