Answer:
1. While they kept searching the hind of the vehicle, the thief ran away from behind them.
2. the spy was caught but he lied about his contractor's whereabouts.
Step-by-step explanation:
for 1.
hind means posterior or rear of something while behind is self explanatory so the sentence forms with the pair easily about a vehicle's hind that is being searched as a thief runs from behind those who are searching,
for 2.
the sentence can easily be formed for a spy who in a certain situation has to lie.