Question

— I didn’t know you were friends with Mr. Smith.
— We ______ each other for6 years.

A．knew

B．are known

C．have known

D．will know

Answer 1

C

試題分析：句意：我不知道你和史密斯先生是朋友。——我們已經彼此認識六年了。結合語境可知本句描述的是現在已經完成的動作。故選C。