11.---Hello, may I speak to Mr. Smith? ---I’m sorry, he is out. A. but B. and C. or 急!
问题描述：
11.---Hello, may I speak to Mr. Smith? ---I’m sorry, he is out. A. but B. and C. or 急!
填在he前面，说明为什么
答
选B为什么根据I'm sorry判断此处已有转折意思 另两项双重否定为肯定有转折为什么用and双重否定表肯定