—Which city has______population,Beijing,Guiyang or Xingyi?—Beijing, of course.
I want to go ________ for my winter vacation.
Which sign tells us it is important to plant more trees?
— Can you stay here longer? —_______.But I have to prepare for my exam.
______people came to Baotu Spring during May 1st
We must work hard. There _______an important exam in June.