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 |
He never does anything wrong. He should be the ________ to blame.
| A．least | B．last | C．worst | D．best |
Reading provides the mind only with materials of knowledge; it is thinking that makes ________ we read ours.
| A．that | B．what | C．which | D．it |
We have done things we ought not to have done and ________ undone things we ought to have done.
| A．left | B．leaving | C．will leave | D．to leave |
I just don’t understand ________ that prevents so many children at school from being as happy as one might expect.
| A．what it is | B．what it does |
| C．what is it | D．why is it |
— Mr． Gordon asked me to remind you of the meeting this afternoon． Don't you forget it!
— Ok, I ．
| A．won't | B．don't | C．will | D．do |