I would have come earlier, but I ________ that you were waiting for me.
| A．hadn’t known | B．didn’t know | C．would have known | D．haven’t know |
―Look! What a mistake! Why?
―Sorry, I _________ on it.
| A．don’t concentrate | B．hadn’t concentrated |
| C．haven’t been concentrating | D．wasn’t concentrating |
My father didn’t have to say anything. I knew he was upset from his ________.
| A．look | B．sight | C．appearance | D．sign |
Cao Cao’s tomb is reported ________ in China, which attracts nationwide attention.
| A．being found | B．to be found |
| C．having been found | D．to have been found |
The chairman will be pleased at ________ scene that everything is in ________ place.
| A．a; a | B．the; the | C．the; 不填 | D．不填; the |
―Karen, can I talk to you for a minute?
―Sure, ________?
| A．how come | B．what’s up | C．how’s that | D．what for |