It was during the Ming Dynasty ________ the Great Wall was repaired and extended to take on the appearance it has today.
| A．when | B．which |
| C．what | D．that |
Peter has to spend ________ two hours every day on the demanding math assignment.
| A．at least | B．at most | C．at latest | D．at last |
You really don’t need to buy another computer ________ you have already got one.
| A．while | B．before | C．though | D．when |
It is reported that 1.4 million people took part in ________ post-graduate entrance exam, ________ 13 percent increase from last year.
| A．a; the | B．the; a | C．a; / | D．/; a |
--You know what? Tom wants to be Harry Potter after he graduates from school.
-- Are you kidding? He will never ________ a person like him.
| A．change | B．turn | C．make | D．get |
We ________ last night, but we went to the concert instead.
| A．must have studied | B．might study | C．should have studied | D．would study |