— Students _____ be allowed to use mobile phones at school.— I agree. Phones can bring troubles.
---Can you give me______ information about Paris? ---Sorry, I know nothing about it.
The girl is only two years old. She is _______ to go to school.
—Maria likes singing. Do you often hear her _______ after class? —Yes, I do.
—Would you mind _______ in the classroom? —Sorry, I won’t do that again.
The Changjiang River is one of ________ in the world.