In China and some other countries, it is impolite to speak loudly _______ you are having a meal.A. before B. while C. after
There are_________ students in my school._________ students in my school is over 5000.
What do you ______________the transportation in your city?
Don’t forget __________ the lights when you leave the classroom.
My hair is shorter than ___________.
______ important for us ________English well.