China’s economic and social development requires more substantial reforms, as unnecessary government influence on the private sector has _______ an abuse of authority.

Bad habits are no way easy to be ______; it needs your determination and perseverance.

It suddenly        to the teacher that he hadn’t left any assignments(作业) to his students.

I found a bucket, ______ it in the sink and turned the tap on. 

In the country guests tend to feel they are not highly __________ if the invitation to a dinner party is given only three or four days before the party date.