「習慣」を英語で言うと、habit, custom, practice, convention,ruleですね。では、クイズです。下の英文にこの単語のいずれかを入れてください。
(1) It is a business ( ) to exchange business cards between the two businessmen.
(2) I have got into the ( ) of watching TV while eating meals.
(3) In Japan it is the ( ) for people to take off their shoes at the entrance.
(4) Some people defy the ( )s of society.
(5) My ( ) is to go to the gym on weekends for maintaining my health.