In the end , he turned ______history teacher, who had______ good knowledge of history, especially ______ history of ______Ming Dynasty.
| A．a,/,the, a | B．/,a ,the, the | C．/,a, the,/ | D．a, a, the,/ |
His technique has developed to the point _____ he can help kill the latest computer virus going round the city.
| A．that | B．which | C．when | D．where |
The place _____ the bridge is supposed to be built should be _______ the cross-river traffic is the heaviest.
| A．to which; where | B．at which; where |
| C．by which; in which | D．for which; which |
It was an agreement, ______ could not be changed.
| A．of which details | B．whose the details |
| C．the details of which | D．all whose details. |
The shopkeeper did not want to sell for ______ he thought was not enough.
| A．what | B．which | C．where | D．how. |
Helen was much kinder to her youngest child than she was to the others, _____, of course, made the others unhappy.
| A．which | B．that | C．what | D．who |