—Don’t ______the rubbish everywhere . It’s our duty to protect the environment.— I’m sorry.I won’t do that again.
We should do we can those e ndangered animals.
Which of the following signs can be seen on the door of a shopping center?
The boy is busy ________ tomorrow’s lesson.
Hurry up! The match for ten minutes.
—I was told to be here before seven. — Oh, you . I'm sorry for not telling you that we have changed the plan.