【题目】选择合适的句子补全对话。
A. Can we have a dog, Mum?
B. He can't see.
C. Dogs are useful.
D. Grandma Zhang is deaf.
Worker A: Grandpa Li is blind. _____ The dog helps him.
Worker B: _____ She can't hear. The dog helps her.
Mum: Wow! _____ They can do a lot.
Huanhuan: _____
Mum: No, we can't. I'm sorry.
【答案】B D C A
【解析】
略
