用适当的短语、句子补全对话。
A: Hi, Mike! Could you please play pingpong with me?
B: 1 .
A: Why?
B: I have to stay at home 2 my granny.
A: 3 ?
B: She said she had a cold.
A: 4 . Did she go to see doctor?
B: Yes, I took her to the hospital this morning.
A: 5 ?
B: He said there was nothing serious with my granny, but she has to be in bed for some time.
A: Are you coming later?
B: I'll if I can. I have to wait until my mother comes back.
A: OK. But now I have to ask Li Hua instead.
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