根据对话内容，将方框内符合对话情境的句子抄写在答题纸上，使对话恢复完整．选项中有两项是多余的．
A：Hello，Lisa．（76）
B：I've been to the hospital．
A：What's the matter with you？
B：（77） I went to see Cathy．
A：（78）
B：She fell and broke her arm while riding the bike．
A：Is it serious？
B：（79）
A：I'm sorry to hear that．
B：（80）
Sure，I can look after myself．Where did she go？What happened to her？I really hope Cathy will get better soon．Well，nothing wrong with me．Where have you been？Yes，the doctor told her to stay in hospital．