Question

A lot of buildings ——and the place ——very noisy ever since we moved here。

A.have been built ；has become D.were built ；became 为什么选A不选D

Answer 1

since we moved here（自我们搬到这里以来）表示过去一定时间以来一直发生的事情，用现在完成时，故选A。

since引导的时间状语为典型的主句需采用现在完成时的标志。

Answer 2

since 引导的时间状语从句，它的主句要用现在完成时。