Common sense requires us to get away from the concept that national boundaries are frontiers _________ knowledge may not spread.
| A．with which | B．across with |
| C．through which | D．from which |
_________ in the mountains for a week, the two students were finally saved by the local police.
| A．Having lost | B．Being lost | C．Lost | D．Losing |
.The dishes ________ so delicious were cooked by my father who was a good cook
| A．tasted | B．tasting | C．to taste | D．to be tasted |
Parents _________ much importance to education. They will do their best to give their children that priceless gift.
| A．pay | B．apply | C．attach | D．associate |
My request is that the information referred to in my report ________ Mr. Brown without delay.
| A．to be e-mailed | B．be e-mailed | C．e-mailed | D．being e-mailed |
.________ that he had wasted a lot of time, Tom decided to work hard on his study.
| A． Realizing | B．To realize | C．Realized | D．Having been realized |