Контрольная работа по иностранному языку

Choose the correct word for each sentence. (20 баллов)
In most countries policemen carry ____a__ .
guns b) swords c) masks
Members of Criminal Investigation department are ___a___ .
officers b) volunteers c) detectives
A police officer can stop and search people if he _____b_ them of committing a crime.
prevents b) suspects c) provides