You never know how much difficulty we _________ such a dishonest man promise to change last time.
All Chinese middle school students in the countryside won’t have to pay for school.
Miss Wang can remember, she hasn’t met the girl before.
The foreigners enjoyed themselves in Jiuzhaigou and they were all with the trip.
— How many are there in the USA? — There are fifty.
— What do you want to be when you ? — An astronaut.