求过去式：1,smell 2,walk 3,pick 4,happen 5,help 6,learn
网友回答
1.smelt
2.walked
3.picked
4.happened
5.helped
6.learnt
有不明白的地方再问哟,祝你学习进步,更上一层楼! (*^__^*)
======以下答案可供参考======
供参考答案1:
1.smelt
2.walked
3.picked
4.happened
5.helped
6.learnt
供参考答案2:
smeltwalked
picked
happened
helped
learnt / learned