情景对话
A：Would you like to have dinner with me this evening, Bob?
B： ____ . Maybe another time.
A：What are you doing?
B：I'm making aplan____
A：What plan? Is it very important?
B：Yes, I always do volunteer work on the first Saturday of every month.
A：____
B：I help out at the children's hospital. I help to plan some activities.
A：____
B：Of course. You should help to make the sick children happy.
A：____ I can tell them some interesting stories.
a. Oh, I'd love to do that.
b. I must finish it on time.
c. Sorry, I can't. I'm busy.
d. Err…Bob, could I join you?
e. What kind of volunteer work do you do？
