____, I could not memorize the text.
| A．However hard did I try | B．However hard I tried |
| C．However I tried hard | D．However I had tried hard |
_________ the meeting room, he found all the parents already ________ there.
| A．To enter, sitting | B．Stepping into, to seat |
| C．Entering, seated | D．Entered, seat |
The construction of a 5-million-ton iron and steel works is now under__________.
| A．conclusion | B．contribution | C．condition | D．consideration |
_________ 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 |