A．20－yearB．a 20－year periodC．20－yearsD．a 20 years

Lisa is a （) girl.A. ten－yearB. ten－yearsC. ten yearD. ten years

She is ill ___A.all the yearB.whole year roundC.all the year roundD.all year round

The tropical year differs from which year by 20 minutes （).A.Astronomical yearB.Natural ye

？？？？CIn January 2004, a 20－year－old woman ran a red light while talking on a cell phone. H

How long did Ethbell teach minority students？A．8 years.B．16 years.C．20 years.D．30 years.

Before 20 years old I had______.A. those unexpect