She was ___ her early twenties when she went abroad.
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During____ century, the world population has reached 6 billion.
A. twenty
B. the twentieth
C. twentieth
D. the twenty
What's the date today? -Its___.
A. Friday
B. time to go
C. cloudy
D. June 4th
Jenny was born_______
A. on July 10, 1987
B. in July 10, 1987
C. in 1987, July 10
D. on 1987, July 10
About____ of the books are written in Chinese.
A. four-fifth
B. four-fifths
C. fourth-fifths
D. fourths-fifth