We are living in ______ world of developing, ______ world where any problem can be solved in a peaceful way.
Many students listened to the lecture, but I wondered how much they .
The customs office is your luggage is inspected when you enter or leave a country.
We are proud of our hometown, which is in coal and natural crystal(水晶石).
However much you have done, you ought to the help you’ve received from others.
The girls in the photograph are twins, is my classmate in high school.