— John, could you please the black-board now? It’s your duty today.
— OK. I’ll do it right away.
A．not to clean B．to clean C．not clean D．clean
— You used to the bus to school, didn’t you?
— Yes, I did. However, I am used to to school now.
A．take; walk B．take; walking C．taking; walking D．taking; walk
— What other rules do you have in your class?
— Each student has to a composition once a week.
A．hand in B．hand up C．hand over D．hand out
We needn’t hurry all the way to the airport — the flight has been because of the bad weather.
A．put on B．put off C．put away D．put up
— What happened?
— The owner changed his mind and refused his house.
A．sell B．sold C．selling D．to sell
— I think saving water is more important than recycling paper in our daily life.
— I disagree. Recycling paper is saving water.
A．the same as B．so important as
C．as important as D．the most important
