Question 3: Mark the letter A, B, C or D to indicate the correct answer to each of the following question: 50. You should take notice of warnings which state that guard dogs are on___________.
The answer is NO
Explanation: be on patrol (idm): patrolling
The remaining answers:
on alert: in a state of readiness defense (n): defense
watch (n): guarding
You need to heed warnings about patrol dogs on duty.
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