1. 根据短文内容，用括号内所给动词的正确时态填空

Dear Peter,   

    I'm writing to tell you about what happened to me last week while I (visit)my aunt．One afternoon I(take)her dog for a walk when I(notice)a girl climbing a tree by the edge of the cliff(悬崖边)．Suddenly-the branch(树枝) (break)and the girl(fall)over the edge．I(think)about what to do when a man(come)along the road．I(explain)what had happened and when he(go)for help，I(talk)to the girl．Well，everything ended happily．

    That's all my news．Write and tell me yours soon．

Yours，

Lucy.