He will call me if he ________ in Beijing.
—Who came to school earliest yesterday morning? —_______.You can ask Linda. She may know.
Do you enjoy _______ pictures outside?
Lao She is famous _______ his play _______ a writer.
—_______ do you talk to your teacher at the School Air? —Once a week.
A library with two hundred thousand books _______ to the school last year.