-- Cross the road carefully, __________ you’ll keep yourself safe.--Thank you.
Boy, didn’t you see people were waiting in line? Don’t______in!
The weather is bad. You shouldn’t risk _______ mountains.
------Have you read the______ of the country you are going to? ------Yes. Now I know it’s a country famous for natural beauty.
The old men and the children must in our country .
Paper first invented in China .