— does the math class begin? —At about 9 o’clock.A. How B. How often C. What time
We know that she enjoys books very much.
We often see the sign in a hospital.
The Leaning Tower of Pisa (比萨斜塔) is so great _____ old building.
There is a big tree in ________ front of our classroom and a big blackboard_in ________front of it.
“Don’t ____ on the computer. It’s time for class.” Says my teacher.