A lack of ____ of cultural differences to local customs can cause problems.
The customs office isyour luggage is inspected when you enter or leave a country.
We are proud of our hometown, which isin coal and natural crystal(水晶石).
However much you have done, you ought tothe help you’ve received from others.
The girls in the photograph are twins,is my classmate in high school.
I have made greater progress in English, and my teacher inspired me to keep it.