–I want to return the book to John, but I can’t find him.--He______ the library. You can find him there.
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.