What/Why/Who引导的特殊疑问句 — 英语词汇题
题目
阅读对话，从方框中选出合适的疑问词填空，每词限用一次。
A: (1) ___ is your favourite subject?
B: Science.
A: (2) ___ is your science teacher?
B: Ms Green.
A: (3) ___ do you like science?
B: Because it is fun and useful.
A. What B. Why C. Who