Q19:

In many nations, criminal law does not apply to corporations, but in the United Stated today, a corporation commits a crime whenever one of its employees commits a crime, if the employee acted within the scope of his or her authority and if the corporation benefited as a result.

1. a corporation commits a crime whenever one of its employees commits a crime, if the employee acted

2. a corporation is committing a crime whenever one of its employees committed a crime, if those employees were acting

3. corporations commit a crime whenever one of its employees does, on the condition that the employee acts

4. corporations commit crimes whenever an employee of those corporations commit a crime, if it was while acting

5. the corporation whose employees commit a crime, commits a crime, whenever the employee acted

答案是a,nn解释一下吧~~

B. "is committing" 错误，不能用现在进行时说明一般的事实。whenever ... committed, were acting 时态都不对。

C. corporationS .... its ... 发现前后在数上不一致了吧， 另外，employee acts, 现在时，与后面的benefited 不平行。

D.E. doesn't make sense.