The more serious you are, the fewer mistakes you will make.

So far, the number of forests is growing faster and faster.

Please pay attention to safety when crossing the road: please pay attention to safety when crossing the road;

When I was a child, my uncle often gave us clothes and food: my uncle Ofen bought clothes and food for us when I was a child.

It is hard for us to believe what they say: we can believe what they say.

He doesn't want me to know what happened to him: he doesn't want me to know what happened to him.

We are against making noise in the library.

Don't forget to turn off the light when you leave the room.

He made many toy models to make his brother happy.

She is very ill and should be sent to the hospital at once.