Question

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The sergeant barked an order to his troops.
A. lion
B. dog
C. bull
D. monkey

Answer 1

As you know, the dogs serve in police so it may be the dogs. I think the correct answer is B. dog. It may be training dogs in police or in army.
And of course, all the rest animals we can meet in circus only or in wild nature. And there is not a training by the sergeants in cirkus or in savanna.

Answer 2

I think the answer is C