Question

What did Mr．Smith do before he came to China?
—He         in a car factory．

A．worked

B．works

C．is working

D．will work

Answer 1

A

本題考查動(dòng)詞時(shí)態(tài)。由問(wèn)句可知是一般過(guò)去時(shí)，故答案選A，work的過(guò)去式。