填入一个适当的词补全对话，每空一词。
A: Hi, Mary. We’re going to have our graduation (毕业) party. ____1____ you decided what to do yet?
B: No, but we need to record the happiest time.
A: I agree. I’ll bring my camera here.
B: Do you think writing some words to each other is a wonderful idea?
A: Yes, I think ____2____.
B: Why ____3____ invite our teachers to the party?
A: Good idea. I can’t wait.
B: Let’s get ready for it together.
A: When and ____4____ shall we meet?
B: Let’s meet in our classroom at 9:00 a.m. tomorrow.
A: All ____5____. See you!
How is your program getting along？
Jack Ma （agree）to help us， but he has changed his mind．
We must remember that the medical workers （fight）against the virus while we were resting at home．
Many parents are considering （choose）a good school for their children．
Simon， let's meet （在……外面）the theatre at 2 o'clock．
The （礼貌的）you are， the more others will like you．