Do you know ______ woman in red?—Yes, she’s a professor of_________ university.

Why did you laugh just now？— Ted wanted to tell us ______ very funny story, but he forgot ______ ending himself.

You look so happy!— That’s because an old friend of is coming.

_________ have you been in China? —Since last Wednesday.[ ]

I always go to sleep _____the light on because I amafraid of the dark when I am alone in a place. [ ]