One winter day ____, he saw the tracks of animals in the snow and observed that

题干

One winter day ____, he saw the tracks of animals in the snow and observed that the appearance of each one was different.

A．while he hunting	B．while hunting
C．while he hunt	D．while hunted

上一题下一题 0.64难度单项选择更新时间:2012-05-26 10:35:35

小学学科试题库

初中学科试题库

高中学科试题库