I’ll let you know ____ he comes back.
―Look! What a mistake! Why? ―Sorry, I _________ on it.
My father didn’t have to say anything. I knew he was upset from his ________.
Cao Cao’s tomb is reported ________ in China, which attracts nationwide attention.
The chairman will be pleased at ________ scene that everything is in ________ place.
―Karen, can I talk to you for a minute? ―Sure, ________?