题目

It's seven o'clock in the morning. Lisa _____ and washes her face. Then she comes to the ______. Mrs. White is there, making breakfast for Lisa. Lisa says, “Mum, eating ______ can help me stay healthy, right?”“Yes, Lisa.” Mrs. White says.Lisa says, “I want to eat ______ egg(s) for breakfast today.”Mrs. White is surprised(惊讶的). She ______ that Lisa doesn't like eating eggs.”Lisa, you eat an egg for breakfast because I ask you to. Now, you _____ you want two?” “Well, Mum.There is a new girl in my _______ . She doesn't have breakfast every day. She is a nice girl and I wa已知数列{an}中，a1=1，前n项和（1）求a2，a3；（2）求{an}的通项公式．