He found very difficult the math problem.
— I wonder at 6:00 yesterday afternoon.— I was doing my homework in the reading room.
— You shouldn’t eat too much junk food. It’s bad for your health.— You’re right. junk food I eat, I will be.
The volunteers many signs to remind people to protect the environment.
useful robot! It can help with the housework like a human servant.
It’s reported that there are more than 300 smokers in China, nearly a third of all the smokers in the world.