It is reported that between the year 1550 and 1950 about one kind of living things___each year .
The school should ______ immediately to the parents’ request that students attend classes in the evening.
He left his hometown with the ______ of finding a good job in Shanghai.
Tom asked the candy makers if they could make the chocolate easier ______ into small pieces.
John is the only one of the students in our class that never ______ a mistake even when it is pointed out to him.
I believe _____ you have made efforts and ______ you are sure to achieve your goal.