根据提示补全对话。
A: Hello, Jenny.
B: Hi, Bill.
A: _______(多少) subjects do you have today?
B: 4.
A: _______(什么) are they?
B: Chinese, English, ________ (物理和化学).
A:Oh, which one do you __________ (最喜欢)？
B: Chinese.
A: _______ (为什么) do you like it?
B: It’s difficult, but _________ (interest). What about you?
A: My favourite is music. I think it’s relaxing.
B: _______ (听), the bell is ringing. Let’s go.