다음 글의 빈칸에 가장 알맞은 것은?When riding on buse… | [법원직 9급 영어] 07년 1회차 기출문제 상세 페이지

다음 글의 빈칸에 가장 알맞은 것은?
When riding on buses, trains, and other public transportation, speak in a quiet or normal conversational tone, and try to avoid extended phone conversations. Loud, animated conversations can annoy others. Keep your wireless ringer as low as practical to avoid disturbing others. Keep your phone close and easily accessible if you're expecting an important call. If you must take an important phone call but are in a(n)              surrounding, such as during lectures, and concerts, set the phone to vibrate mode and answer the phone only after leaving the room.

proper

beneficial

inappropriate

clumsy