补全对话。
Bob：Hi，Ann．What are you doing?
Ann：____
Bob：____
Ann：I need a pair of scissors and some glue．
Bob：Oh，Mother's Day is coming．____
Ann：Yes．I think she will be very happy．
Bob：Good girl!____
Ann：Yes．But I don't have any crayons．____
Bob：Sure．Here you are．
Ann：Thank you，Bob．
