【2020最新整理国开(电大)人文英语1-3896网上形考机考题库】I am very familiar with him, so I recognized his voice ___________.

【2020最新整理国开(电大)人文英语1-3896网上形考机考题库】I am very familiar with him, so I recognized his voice ___________.
选择一项：
A. particularly
B. especially
C. immediately