of the students in our class_____going to the summer camp in Beijing next week．（ ）
A．Two fifths，isB．Second fifths， are
C．Second fifths， isD．Two fifths， are
Walk along the street，and you will see the computer museum your left．
It is polite for students to put their hands in class if they have questions．
Anna is independent and she can look after when she's alone at home．
You must return the book in fifteen days．It's a of our library．
In the playground， I threw the ball to her and she （catch）it