The girl _______ black is my sister.[ ]

As we all know, every minute, ____full use of____our lessons , will do good to our students．

Tom, what classes do you have every day?—Well, Mom, we have English, math, Chinese and some ______ classes.

Your iPad is quite nice. Where did you buy ______? I want to buy ______, too.

There’s _________800-metre-long road behind _________hospital.