I was so familiar with him that I recognized his voice I picked up the phone.A. immediat

问题补充：

I was so familiar with him that I recognized his voice I picked up the phone.

A. immediately

B. quickly

C. suddenly

D. hurriedly

答案：

(答案→)A. immediately

B. quickly

C. suddenly

D. hurriedly

解析：四个选项中只有immediately可以引导时间状语从句，相当于as soon as。