“科学用眼，保护视力”是青少年珍爱生命的具体表现．科学证实：近视眼镜的度数y（度）与镜片焦距x（m）成反比例．如果500度近视眼镜片的焦距为0.2m，则表示y与x函数关系的图象大致是（　　）

根据对话语境，在空白处填写恰当的句子补全对话
A: Good morning!
B: Good morning! I’d like to join the school volunteer project, but____ .
A: OK, don’t worry. Let me help you.____ ?
B: I love singing and telling stories.
A: Well, you could help look after young children on weekends.
B: ____ . I can sing for them and tell them stories. I’m sure that  children will love me.
A: I agree with you. ____ ?
B: Sure. I am Peter White. My telephone number is 885-276.
A: OK. I’ll call you as soon as possible.
B: ____ .
A: It’s my pleasure.