问题
选择题
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
答案
答案：A
本题考查动词时态。由问句可知是一般过去时，故答案选A，work的过去式。
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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
答案：A
本题考查动词时态。由问句可知是一般过去时，故答案选A，work的过去式。