Question

【题目】Our teachers are very friendly to us．We________friends since three years ago．

A．have been

B．have become

C．would be

Answer 1

【答案】A

【解析】句意：我们的老师对我们很友好。从三年前起我们就成了好朋友。本题考查动词时态。since three years ago是现在完成时态的标志，且动词用延续性动词，故答案为A项。