题目内容：

John Keats,a great British poct,died_____.A.in his twentieth B.in his twenty C.on the twentiets
D.in his twenties
1.twenty-one divided by seven equals_____(seven,three,fourteen,twenty-eight)
2.the price was reduced by______(percent20,per cent20,20 per cent,20 of percent)

优质解答

D
in one's+年龄 表示在某人多少岁时
three
20 per cent