Why问句与喜好表达 — 英语情景题

Read and complete the dialogue.（补全对话） Lily: Hi, Sam! What subjects do you like? Sam: I like Science. Lily: (1)________ do you like Science? Sam: (2)________ it's fun. I like doing experiments. Lily: Do you like Maths? Sam: No, I don't. What about you? Lily: I like Art. Sam: (3)________ do you like Art? Lily: (4)________ I can draw nice pictures.