My aunt has worked in a clinic ___ 1949....

My aunt has worked in a clinic ___ 1949.

A．after

B．before

C．all

D．since

D 【解析】since+时间表示从以前某时开始一直到现在仍在继续，多与完成时连用。

考点分析：

相关试题推荐

The kids are looking forward to ______ Spring Festival.

A．celebrate

B．to celebrate

C．celebrating

D．being celebrated

查看答案

As we all know(众所周知), the dinosaur has _____.

A．died

B．died out

C．died from

D．died of

查看答案

As the spring comes, the flowers began to _____.

A．come out

B．come in

C．come on

D．come down

查看答案

Scientists say they are beginning to _____ in the fight against cancer.

A．break in

B．break out

C．break down

D．break through

查看答案

Sandra was a student ____ the age of 21.

A．at

B．in

C．on

D．for

查看答案

试题属性