1 I was ___(walk) down when Isaw the accident.2 Pop was ___(stop) when I called her.3 What are you thinking of ___(do)?4 The rabbit ran ___(cross) the field.
问题描述：
1 I was ___(walk) down when Isaw the accident.
2 Pop was ___(stop) when I called her.
3 What are you thinking of ___(do)?
4 The rabbit ran ___(cross) the field.
答
1.walking
2.stopping
3.doing
4.crossing
答
walking
stopped
doing
across/cross