He makes ____ a rule to arrive at office on time, which is to be carried out from next Monday.

I don’t believe_____: he said he had finished his homework by himself.

— It is said that Mr Jin was elected headmaster of the new school.— He is _____ hardworking that it is no surprise for him to get ______ post.

The young couple had a quarrel last night and neither of them would give in to ______.

Understanding the cultural habits of another nation,especially ______containing as many different subcultures as the United States,is a complex task.