Choose and fill in the blanks. (选择适当的句子填入句中)
A. He is sad, too.
B. You look so sad.
C. But I should ask my father first.
D. See you later.
Mike: How are you，Mary? 1____
Mary: My mother has to go to the office. My family can't go for a trip.
Mike: And how is your father?
Mary: He is working now.
Mike: How does your father feel?
Mary: 2____
Mike: Would you like to have a picnic with my family?
Mary: Of course. I'd like to go. 3____
Mike: OK. We'11 wait for you.
Mary: Thank you. 4____
